1
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Liu Z, Mao M, Yangcheng R, Lv S. Investigating the Sole Olefin-Based Cycle in Small-Cage MCM-35-Catalyzed Methanol-to-Olefins Reactions. Molecules 2024; 29:2037. [PMID: 38731528 PMCID: PMC11085503 DOI: 10.3390/molecules29092037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/10/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
Small-pore zeolites catalyze the methanol-to-olefins (MTO) reaction via a dual-cycle mechanism, encompassing both olefin- and aromatic-based cycles. Zeolite topology is crucial in determining both the catalytic pathway and the product selectivity of the MTO reaction. Herein, we investigate the mechanistic influence of MCM-35 zeolite on the MTO process. The structural properties of the as-synthesized MCM-35 catalyst, including its confined cages (6.19 Å), were characterized, confirming them as the catalytic centers. Then, the MTO reactions were systematically performed and investigated over a MCM-35 catalyst. Feeding pure methanol to the reactor yielded minimal MTO activity despite the formation of some aromatic species within the zeolite. The results suggest that the aromatic-based cycle is entirely suppressed in MCM-35, preventing the simultaneous occurrence of the olefin-based cycle. However, cofeeding a small amount of propene in methanol can obviously enhance the methanol conversion under the same studied reaction conditions. Thus, the exclusive operation of the olefin-based cycle in the MTO reaction, independent of the aromatic-based cycle, was demonstrated in MCM-35 zeolite.
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Affiliation(s)
- Zhaohui Liu
- Institute of Advanced Interdisciplinary Studies, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
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2
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Wu Y, Han J, Zhang W, Yu Z, Wang K, Fang X, Wei Y, Liu Z. Combined Strategies Enable Highly Selective Light Olefins and para-Xylene Production on Single Catalyst Bed. J Am Chem Soc 2024; 146:8086-8097. [PMID: 38479729 DOI: 10.1021/jacs.3c12087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Achieving multiple high-value-added chemical production through novel reaction processes and shape-selective catalytic strategy is the key to realizing efficient low-carbon catalytic processes. In this work, a methanol-toluene coreaction system was developed, and combined control strategies of reaction pathway guidance and shape-selective catalysis were applied for the successful production of light olefins and para-xylene on single HZSM-5 catalyst bed. Cofeeding toluene additionally provides reactive and flowing aromatic hydrocarbon pool species that change the dominant reaction pathway in the complex network of the methanol reaction on HZSM-5 and promote the formation of ethylene. For the first time, the key reaction intermediates methylmethylenecyclodiene are directly captured and identified by experimental and theoretical techniques. This helps to propose the catalytic cycle for the dominant generation of ethylene and, more importantly, enriches the methanol-to-hydrocarbons (MTH) chemistry and hydrocarbon pool mechanism. Furthermore, 0.4HZSM-5@S-1-CLD, an optimized HZSM-5 catalyst modified by the silicalite-1 epitaxial growth followed by silanization approach, realizes highly selective production of light olefins (especially ethylene) and para-xylene, while excellent reactant activity is maintained. This highly efficient coreaction route gives an important leading significance in synthesizing the raw materials for the polyolefin and polyester industries. The establishment of the combined control strategies provides a model for the joint production of multiple target chemicals in complex catalytic processes.
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Affiliation(s)
- Yimo Wu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingfeng Han
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenna Zhang
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhengxi Yu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Kunyuan Wang
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xudong Fang
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yingxu Wei
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhongmin Liu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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3
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Wang Q, Dai W, Dai Y, Pan M, Liu Y, Zhang L, Zheng J, Liu X, Li R, Ma L, Wang H, Zong Y. Design Synthesis of Low-Silica SAPO-34 Nanocrystals by Constructing Isomorphous Core-Shell Structure: An Effective Catalyst for Improving Catalytic Performances in Methanol-to-Olefins Reaction. ACS APPLIED MATERIALS & INTERFACES 2024; 16:14308-14320. [PMID: 38456610 DOI: 10.1021/acsami.3c19166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
It is well known that low-silica SAPO-34, with an extra porosity (meso- and/or macropores) system, affords excellent catalytic performance in the methanol-to-olefins (MTO) reaction, while the direct synthesis of low-silica SAPO-34 with a hierarchical structure is difficult to achieve, principally because the crystal impurities are usually formed under a low silica content in a gel precursor. Herein, low-silica SAPO-34 nanocrystals were successfully fabricated for the first time by constructing an isomorphous core-shell structure in an epitaxial growth manner. In which, low-silica, ultrasmall nanosquare-shaped SAPO-34 crystals with the same growth orientation along the (100) crystal plane compactly grow on the monocrystal SAPO-34 cores. Crucially, the external surface acid properties of the core SAPO-34 with the Si-rich outer layer are effectively modified by the low-silica SAPO-34 shell. Furthermore, the growth process and Si-substitution mechanism of the shell zeolite were comprehensively investigated. It was found that with the prolonged crystallization time, more and more coordinated Si(4Al) and Si(3Al) structures via two substitution mechanisms (SM2 and SM3) are generated in the nanocrystalline SAPO-34 shell, which endow moderate acidity of the core-shell SAPO-34. Compared to the uncoated SAPO-34, the core-shell SAPO-34 performs a longer lifespan and a higher average selectivity of light olefins (ethylene plus propylene) when applied to the MTO reaction, which is attributed to the positive effects of the luxuriant interstitial pores offering a fast diffusion channel and the moderate acid density depressing the hydrogen transfer reaction of light olefins. This work provides new insights into the fabrication of low-silica SAPO-34 nanocrystals, which are based on the rational design of the isomorphous core-shell zeolite.
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Affiliation(s)
- Quanhua Wang
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
- Datang Nanjing Environmental Protection Technology Co., Ltd, Nanjing, Jiangsu 211111, China
| | - Weijiong Dai
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Yi Dai
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Meng Pan
- College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, China
| | - Yanchao Liu
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Lichen Zhang
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jiajun Zheng
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Xuguang Liu
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Ruifeng Li
- Research Centre of Energy Chemical & Catalytic Technology, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Luoning Ma
- Datang Nanjing Environmental Protection Technology Co., Ltd, Nanjing, Jiangsu 211111, China
| | - Hu Wang
- Datang Nanjing Environmental Protection Technology Co., Ltd, Nanjing, Jiangsu 211111, China
| | - Yuhao Zong
- Datang Nanjing Environmental Protection Technology Co., Ltd, Nanjing, Jiangsu 211111, China
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4
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Soheili S, Nakhaei Pour A. Controlling product selectivity and catalyst lifetime by altering acid strength, cavity size of SAPO, and diffusion rate of methanol in the MTO reaction: DFT and MD calculations. Phys Chem Chem Phys 2024; 26:5226-5236. [PMID: 38261405 DOI: 10.1039/d3cp05455a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
The initiation mechanisms of the MTO process over silicoaluminophosphate (SAPO) catalysts with zeolite-like structures using first-principles calculations have been investigated. The supramolecular system of silicoaluminophosphates consisting of inorganic cages with Brønsted acid sites and trapped organic compounds was used as a catalyst in the MTO reaction. To study the structure-property relationship in more detail, the effect of acidity and cage size of different types of SAPOs (SAPO-18, SAPO-34, and SAPO-17 with CHA, AEI, and ERI structures, respectively) in the aromatic cycle of hydrocarbon pool mechanism was investigated. The differences in reaction barriers can be explained by the cage size, pore topology, and environment of framework protons of materials. Product selectivity was controlled by using cavity-type zeolite, the steric constraint of the cavity for the formation of critical intermediates, and acidic strength. The results show that ethylene selectivity increases as the cavity size decreases, and the elliptical pore size of the structures decreases, thereby decreasing the acidity of the zeolite structure, leading to an increase in propylene selectivity. SAPO-18 exhibits the longest reaction lifetime and has the highest amount of carbonaceous material after reaction completion. SAPO-17 with small pore and cavity size is selective to ethylene, although it shows a rapid catalyst deactivation rate.
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Affiliation(s)
- Saeedeh Soheili
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran.
| | - Ali Nakhaei Pour
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran.
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Zuo C, Su Q. Research Progress on Propylene Preparation by Propane Dehydrogenation. Molecules 2023; 28:molecules28083594. [PMID: 37110826 PMCID: PMC10142202 DOI: 10.3390/molecules28083594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
At present, the production of propylene falls short of the demand, and, as the global economy grows, the demand for propylene is anticipated to increase even further. As such, there is an urgent requirement to identify a novel method for producing propylene that is both practical and reliable. The primary approaches for preparing propylene are anaerobic and oxidative dehydrogenation, both of which present issues that are challenging to overcome. In contrast, chemical looping oxidative dehydrogenation circumvents the limitations of the aforementioned methods, and the performance of the oxygen carrier cycle in this method is superior and meets the criteria for industrialization. Consequently, there is considerable potential for the development of propylene production by means of chemical looping oxidative dehydrogenation. This paper provides a review of the catalysts and oxygen carriers employed in anaerobic dehydrogenation, oxidative dehydrogenation, and chemical looping oxidative dehydrogenation. Additionally, it outlines current directions and future opportunities for the advancement of oxygen carriers.
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Affiliation(s)
- Cheng Zuo
- College of Chemistry & Chemical and Environmental Engineering, Weifang University, Weifang 261000, China
| | - Qian Su
- College of Chemistry & Chemical and Environmental Engineering, Weifang University, Weifang 261000, China
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6
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Shi Z, Bhan A. Metrics of Performance Relevant in Methanol-to-Hydrocarbons Catalysis. J Catal 2023. [DOI: 10.1016/j.jcat.2023.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
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7
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Hydrogen transfer reaction contributes to the dynamic evolution of zeolite-catalyzed methanol and dimethyl ether conversions: Insight into formaldehyde. CHINESE JOURNAL OF CATALYSIS 2023. [DOI: 10.1016/s1872-2067(22)64194-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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8
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Montalvo-Castro H, DeLuca M, Kilburn L, Hibbitts D. Mechanisms and Kinetics of the Dehydrogenation of C 6–C 8 Cycloalkanes, Cycloalkenes, and Cyclodienes to Aromatics in H-MFI Zeolite Framework. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Hansel Montalvo-Castro
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Mykela DeLuca
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Lauren Kilburn
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - David Hibbitts
- Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, United States
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9
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Fan S, Wang H, He S, Yuan K, Wang P, Li J, Wang S, Qin Z, Dong M, Fan W, Wang J. Formation and Evolution of Methylcyclohexene in the Initial Period of Methanol to Olefins over H-ZSM-5. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sheng Fan
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Han Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Shipei He
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Kai Yuan
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Pengfei Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
| | - Junfen Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
| | - Sen Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
| | - Zhangfeng Qin
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
| | - Mei Dong
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
| | - Weibin Fan
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
| | - Jianguo Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, P.O. Box 165, Taiyuan, Shanxi 030001, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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10
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Gong X, Çağlayan M, Ye Y, Liu K, Gascon J, Dutta Chowdhury A. First-Generation Organic Reaction Intermediates in Zeolite Chemistry and Catalysis. Chem Rev 2022; 122:14275-14345. [PMID: 35947790 DOI: 10.1021/acs.chemrev.2c00076] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Zeolite chemistry and catalysis are expected to play a decisive role in the next decade(s) to build a more decentralized renewable feedstock-dependent sustainable society owing to the increased scrutiny over carbon emissions. Therefore, the lack of fundamental and mechanistic understanding of these processes is a critical "technical bottleneck" that must be eliminated to maximize economic value and minimize waste. We have identified, considering this objective, that the chemistry related to the first-generation reaction intermediates (i.e., carbocations, radicals, carbenes, ketenes, and carbanions) in zeolite chemistry and catalysis is highly underdeveloped or undervalued compared to other catalysis streams (e.g., homogeneous catalysis). This limitation can often be attributed to the technological restrictions to detect such "short-lived and highly reactive" intermediates at the interface (gas-solid/solid-liquid); however, the recent rise of sophisticated spectroscopic/analytical techniques (including under in situ/operando conditions) and modern data analysis methods collectively compete to unravel the impact of these organic intermediates. This comprehensive review summarizes the state-of-the-art first-generation organic reaction intermediates in zeolite chemistry and catalysis and evaluates their existing challenges and future prospects, to contribute significantly to the "circular carbon economy" initiatives.
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Affiliation(s)
- Xuan Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Mustafa Çağlayan
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Yiru Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Kun Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
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Wang Y, Han J, Wang N, Li B, Yang M, Wu Y, Jiang Z, Wei Y, Tian P, Liu Z. Conversion of methanol to propylene over SAPO-14: Reaction mechanism and deactivation. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64123-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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12
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Shi Z, Bhan A. Methanol-to-olefins catalysis on window-cage type zeolites/zeotypes with syngas co-feeds: Understanding syngas-to-olefins chemistry. J Catal 2022. [DOI: 10.1016/j.jcat.2022.07.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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13
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Liu C, Uslamin EA, van Vreeswijk SH, Yarulina I, Ganapathy S, Weckhuysen BM, Kapteijn F, Pidko EA. An integrated approach to the key parameters in methanol-to-olefins reaction catalyzed by MFI/MEL zeolite materials. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63990-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Sanhoob M, Khan A, Ummer AC. ZSM-5 Catalysts for MTO: Effect and Optimization of the Tetrapropylammonium Hydroxide Concentration on Synthesis and Performance. ACS OMEGA 2022; 7:21654-21663. [PMID: 35785282 PMCID: PMC9245136 DOI: 10.1021/acsomega.2c01539] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Light olefin production from methanol using various zeolite catalysts has industrial and economic importance considering the growth of the petrochemical market. Zeolites are generally synthesized using various organic templates as structure-directing agents (SDAs). In this study, synthesis of a series of ZSM-5 zeolites was performed systematically using the microwave-assisted crystallization method, and these samples were analyzed in detail to understand the effect of the SDA concentration. Powder diffraction, N2 adsorption, scanning electron microscopy, ammonia adsorption desorption, and 27Al and 29Si NMR spectroscopies were used for the characterization. The organic SDA tetrapropyl ammonium hydroxide (TPAOH/SiO2 mole ratio = 0.0500) is found to have an optimum concentration against the silica precursor for achieving the highest crystallinity, suitable morphology, ideal pore size, effective pore volume, and tuned microporous/mesoporous area. For samples with a template concentration ratio of 0.050 or higher, 29Si and 27Al NMR data revealed the presence of an intact ZSM-5 structure. Using a fixed bed reactor at 500 °C and atmospheric pressure, the catalytic performance of the selected catalysts from the series is investigated for the methanol-to-olefin conversion reaction. The sample with the highest crystallinity showed the best conversion, selectivity toward light olefins, and time on stream stability. It is also worth noting that the highest crystallinity, micropore area, and micropore volume are reached for the optimum value rather than the highest template concentration. This allows for a reduction in the template concentration and a move closer to a synthesis pathway benign to environment and economics.
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Affiliation(s)
- Mohammed
A. Sanhoob
- Interdisciplinary
Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, Box 5040, Dhahran 31261, Saudi Arabia
| | - Abuzar Khan
- Interdisciplinary
Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, Box 5040, Dhahran 31261, Saudi Arabia
| | - Aniz Chennampilly Ummer
- Interdisciplinary
Research Center for Refining and Advanced Chemicals (IRC-CRAC), King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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15
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He S, Wang S, Fan S, Luo L, Yuan K, Qin Z, Dong M, Wang J, Fan W. Improvement of the catalytic performance of ITQ-13 zeolite in methanol to olefins via Ce modification. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.05.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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16
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Zhang W, Wei Y. Regulation of product distribution in CO2 hydrogenation to light olefins. Chem 2022. [DOI: 10.1016/j.chempr.2022.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Hedlun J, Zhou M, Faisal A, G. W. Öhrman O, Finelli V, Signorile M, Crocellà V, Grahn M. Controlling Diffusion Resistance, Selectivity and Deactivation of ZSM-5 Catalysts by Crystal Thickness and Defects. J Catal 2022. [DOI: 10.1016/j.jcat.2022.04.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Liu C, Uslamin EA, Khramenkova E, Sireci E, Ouwehand LTLJ, Ganapathy S, Kapteijn F, Pidko EA. High Stability of Methanol to Aromatic Conversion over Bimetallic Ca,Ga-Modified ZSM-5. ACS Catal 2022; 12:3189-3200. [PMID: 35280436 PMCID: PMC8902757 DOI: 10.1021/acscatal.1c05481] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/10/2022] [Indexed: 11/29/2022]
Abstract
![]()
The production of
valuable aromatics and the rapid catalyst deactivation
due to coking are intimately related in the zeolite-catalyzed aromatization
reactions. Here, we demonstrate that these two processes can be decoupled
by promoting the Ga/HZSM-5 aromatization catalyst with Ca. The resulting
bimetallic catalysts combine high selectivity to light aromatics with
extended catalyst lifetime in the methanol-to-aromatics process. Evaluation
of the catalytic performance combined with detailed catalyst characterization
suggests that the added Ca interacts with the Ga-LAS, with a strong
effect on the aromatization processes. A genetic algorithm approach
complemented by ab initio thermodynamic analysis is used to elucidate
the possible structures of bimetallic extraframework species formed
under reaction conditions. The promotion effect of minute amounts
of Ca is attributed to the stabilization of the intra-zeolite extraframework
gallium oxide clusters with moderated dehydrogenation activity.
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Affiliation(s)
- Chuncheng Liu
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
- Catalysis Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Evgeny A. Uslamin
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Elena Khramenkova
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Enrico Sireci
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Lucas T. L. J. Ouwehand
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Swapna Ganapathy
- Radiation Science and Technology Department, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands
| | - Freek Kapteijn
- Catalysis Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Evgeny A. Pidko
- Inorganic Systems Engineering, Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
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19
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Wang S, Zhang L, Wang P, Liu X, Chen Y, Qin Z, Dong M, Wang J, He L, Olsbye U, Fan W. Highly effective conversion of CO2 into light olefins abundant in ethene. Chem 2022. [DOI: 10.1016/j.chempr.2022.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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20
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Xie J, Firth DS, Cordero-Lanzac T, Airi A, Negri C, Øien-Ødegaard S, Lillerud KP, Bordiga S, Olsbye U. MAPO-18 Catalysts for the Methanol to Olefins Process: Influence of Catalyst Acidity in a High-Pressure Syngas (CO and H 2) Environment. ACS Catal 2022; 12:1520-1531. [PMID: 35096471 PMCID: PMC8788383 DOI: 10.1021/acscatal.1c04694] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/12/2021] [Indexed: 12/01/2022]
Abstract
The transition from integrated petrochemical complexes toward decentralized chemical plants utilizing distributed feedstocks calls for simpler downstream unit operations. Less separation steps are attractive for future scenarios and provide an opportunity to design the next-generation catalysts, which function efficiently with effluent reactant mixtures. The methanol to olefins (MTO) reaction constitutes the second step in the conversion of CO2, CO, and H2 to light olefins. We present a series of isomorphically substituted zeotype catalysts with the AEI topology (MAPO-18s, M = Si, Mg, Co, or Zn) and demonstrate the superior performance of the M(II)-substituted MAPO-18s in the conversion of MTO when tested at 350 °C and 20 bar with reactive feed mixtures consisting of CH3OH/CO/CO2/H2. Co-feeding high pressure H2 with methanol improved the catalyst activity over time, but simultaneously led to the hydrogenation of olefins (olefin/paraffin ratio < 0.5). Co-feeding H2/CO/CO2/N2 mixtures with methanol revealed an important, hitherto undisclosed effect of CO in hindering the hydrogenation of olefins over the Brønsted acid sites (BAS). This effect was confirmed by dedicated ethene hydrogenation studies in the absence and presence of CO co-feed. Assisted by spectroscopic investigations, we ascribe the favorable performance of M(II)APO-18 under co-feed conditions to the importance of the M(II) heteroatom in altering the polarity of the M-O bond, leading to stronger BAS. Comparing SAPO-18 and MgAPO-18 with BAS concentrations ranging between 0.2 and 0.4 mmol/gcat, the strength of the acidic site and not the density was found to be the main activity descriptor. MgAPO-18 yielded the highest activity and stability upon syngas co-feeding with methanol, demonstrating its potential to be a next-generation MTO catalyst.
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Affiliation(s)
- Jingxiu Xie
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
| | - Daniel S. Firth
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
| | - Tomás Cordero-Lanzac
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
| | - Alessia Airi
- Department
of Chemistry, NIS and INSTM Reference Centre, Università di Torino, Via G. Quarello 15, I-10135 and Via P. Giuria 7, Torino 10125, Italy
| | - Chiara Negri
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
| | - Sigurd Øien-Ødegaard
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
| | - Karl Petter Lillerud
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
| | - Silvia Bordiga
- Department
of Chemistry, NIS and INSTM Reference Centre, Università di Torino, Via G. Quarello 15, I-10135 and Via P. Giuria 7, Torino 10125, Italy
| | - Unni Olsbye
- Centre
for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Saelandsvei 26, Oslo N-0315, Norway
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21
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An Y, Lin T, Yu F, Gong K, Wang X, Qi X, Lv D, Sun Y, Zhong L. Effects of alkaline-earth metals on CoMn-based catalysts for the Fischer–Tropsch synthesis to olefins. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00268j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Alkaline-earth metal promoted CoMn catalysts with higher surface basicity benefit the carburization of CoMn oxides to form more Co2C nanoprisms for olefin formation, especially for long-chain olefins.
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Affiliation(s)
- Yunlei An
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
| | - Tiejun Lin
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
| | - Fei Yu
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
| | - Kun Gong
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
- University of the Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xinxing Wang
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
| | - Xinzhen Qi
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
- University of the Chinese Academy of Sciences, Beijing 100049, PR China
| | - Dong Lv
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
| | - Yuhan Sun
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201203, PR China
| | - Liangshu Zhong
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, PR China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201203, PR China
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22
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Lissens MEML, Mendes PSF, Lei T, Sabbe MK, Thybaut JW. The intricacies of the “steady-state” regime in methanol-to-hydrocarbon experimentation over H-ZSM-5. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01306h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The operating conditions window and experimental procedures ensuring “steady-state” operation in methanol to hydrocarbon conversion have been experimentally determined over an H-ZSM-5 zeolite with considerable acidity (Si/Al = 40).
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Affiliation(s)
| | - Pedro S. F. Mendes
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Tingjun Lei
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Maarten K. Sabbe
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Joris W. Thybaut
- Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
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23
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Effect of morphology and acidity control of Ni-SAPO-34 zeolite on catalytic performance of dimethyl ether to olefins. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Zapater D, Lasobras J, Soler J, Herguido J, Menéndez M. MTO with SAPO-34 in a Fixed-Bed Reactor: Deactivation Profiles. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02718] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Diego Zapater
- Aragón Institute for Engineering Research (I3A), University of Zaragoza, Mariano Esquilor, 50018 Zaragoza, Spain
| | - Javier Lasobras
- Aragón Institute for Engineering Research (I3A), University of Zaragoza, Mariano Esquilor, 50018 Zaragoza, Spain
| | - Jaime Soler
- Aragón Institute for Engineering Research (I3A), University of Zaragoza, Mariano Esquilor, 50018 Zaragoza, Spain
| | - Javier Herguido
- Aragón Institute for Engineering Research (I3A), University of Zaragoza, Mariano Esquilor, 50018 Zaragoza, Spain
| | - Miguel Menéndez
- Aragón Institute for Engineering Research (I3A), University of Zaragoza, Mariano Esquilor, 50018 Zaragoza, Spain
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25
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Ramirez A, Ticali P, Salusso D, Cordero-Lanzac T, Ould-Chikh S, Ahoba-Sam C, Bugaev AL, Borfecchia E, Morandi S, Signorile M, Bordiga S, Gascon J, Olsbye U. Multifunctional Catalyst Combination for the Direct Conversion of CO 2 to Propane. JACS AU 2021; 1:1719-1732. [PMID: 34723275 PMCID: PMC8549042 DOI: 10.1021/jacsau.1c00302] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Indexed: 06/13/2023]
Abstract
The production of carbon-rich hydrocarbons via CO2 valorization is essential for the transition to renewable, non-fossil-fuel-based energy sources. However, most of the recent works in the state of the art are devoted to the formation of olefins and aromatics, ignoring the rest of the hydrocarbon commodities that, like propane, are essential to our economy. Hence, in this work, we have developed a highly active and selective PdZn/ZrO2+SAPO-34 multifunctional catalyst for the direct conversion of CO2 to propane. Our multifunctional system displays a total selectivity to propane higher than 50% (with 20% CO, 6% C1, 13% C2, 10% C4, and 1% C5) and a CO2 conversion close to 40% at 350 °C, 50 bar, and 1500 mL g-1 h-1. We attribute these results to the synergy between the intimately mixed PdZn/ZrO2 and SAPO-34 components that shifts the overall reaction equilibrium, boosting CO2 conversion and minimizing CO selectivity. Comparison to a PdZn/ZrO2+ZSM-5 system showed that propane selectivity is further boosted by the topology of SAPO-34. The presence of Pd in the catalyst drives paraffin production via hydrogenation, with more than 99.9% of the products being saturated hydrocarbons, offering very important advantages for the purification of the products.
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Affiliation(s)
- Adrian Ramirez
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955, Saudi Arabia
| | - Pierfrancesco Ticali
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Davide Salusso
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Tomas Cordero-Lanzac
- SMN
Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Oslo N-0315, Norway
| | - Samy Ould-Chikh
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955, Saudi Arabia
| | - Christian Ahoba-Sam
- SMN
Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Oslo N-0315, Norway
| | - Aram L. Bugaev
- The
Smart Materials Research Institute, Southern
Federal University, Sladkova 178/24, Rostov-on-Don 344090, Russian Federation
| | - Elisa Borfecchia
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Sara Morandi
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Matteo Signorile
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Silvia Bordiga
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Jorge Gascon
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955, Saudi Arabia
| | - Unni Olsbye
- SMN
Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Oslo N-0315, Norway
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26
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A Study into the γ-Al2O3 Binder Influence on Nano-H-ZSM-5 via Scaled-Up Laboratory Methanol-to-Hydrocarbon Reaction. Catalysts 2021. [DOI: 10.3390/catal11101140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Development of a laboratory selected zeolite into an industrial zeolite-based catalyst faces many challenges due to the scaling-up of reaction which requires many upgrades of the as-prepared catalyst such as an enhanced physical strength. To meet this requirement zeolite powders are normally mixed with various binders and then shaped into bulky bodies. Despite the fact there are a lot of reports on the positive features brought by the shaping treatment, there is still a great need to further explore the zeolite properties after the binder introduction. In this case, a lot of studies have been continuously conducted, however, many results were limited due to the usage of much smaller laboratory samples rather than a real factory plant, and more importantly, the maximal/minimal proportion of zeolites in the shaped catalyst. In this research, our shaped catalysts are based on nano-H-ZSM-5 zeolites and alumina (γ–Al2O3) binder while keeping the zeolite content to a maximum. H-ZSM-5 samples and Al-H-ZSM-5 samples are compared in the designed methanol-to-hydrocarbons reaction. With a reduced weight-hourly-space-velocity (WHSV = 1.5 h−1) and a higher reaction pressure (6 bar) favorable for aromatization, together with the tailored instruments for catalyst volume scale-up (20 g samples are tested each time), our tests focus on the early period catalytic performance (during the first 5 h). Unlike a normal laboratory test, the results from the scaled-up experiments provide important guidance for a potential industrial application. The role of the γ–Al2O3 introduced, not only as binder, but also performing as co-catalyst, on tailoring the early time product distribution, and the corresponding coke deposition is systematically investigated and discussed in details. Notably, the Si/Al ratio of H-ZSM-5 still has a decisive influence on the reaction performance of the Al-H-ZSM-5 samples.
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27
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Synthesis of SAPO-56 using N,N,N’,N’-tetramethyl-1,6-hexanediamine and co-templates based on primary, secondary, and tertiary amines. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Xing SY, Liu KK, Wang TF, Han MH. First principles study on the alkylation of benzene with ethene over different zeolites: Insight into the intrinsic mechanism and structure-reactivity relationship. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Lin S, Zhi Y, Chen W, Li H, Zhang W, Lou C, Wu X, Zeng S, Xu S, Xiao J, Zheng A, Wei Y, Liu Z. Molecular Routes of Dynamic Autocatalysis for Methanol-to-Hydrocarbons Reaction. J Am Chem Soc 2021; 143:12038-12052. [PMID: 34319735 DOI: 10.1021/jacs.1c03475] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The industrially important methanol-to-hydrocarbons (MTH) reaction is driven and sustained by autocatalysis in a dynamic and complex manner. Hitherto, the entire molecular routes and chemical nature of the autocatalytic network have not been well understood. Herein, with a multitechnique approach and multiscale analysis, we have obtained a full theoretical picture of the domino cascade of autocatalytic reaction network taking place on HZSM-5 zeolite. The autocatalytic reaction is demonstrated to be plausibly initiated by reacting dimethyl ether (DME) with the surface methoxy species (SMS) to generate the initial olefins, as evidenced by combining the kinetic analysis, in situ DRIFT spectroscopy, 2D 13C-13C MAS NMR, electronic states, and projected density of state (PDOS) analysis. This process is operando tracked and visualized at the picosecond time scale by advanced ab initio molecular dynamics (AIMD) simulations. The initial olefins ignite autocatalysis by building the first autocatalytic cycle-olefins-based cycle-followed by the speciation of methylcyclopentenyl (MCP) and aromatic cyclic active species. In doing so, the active sites accomplish the dynamic evolution from proton acid sites to supramolecular active centers that are experimentally identified with an ever-evolving and fluid feature. The olefins-guided and cyclic-species-guided catalytic cycles are interdependently linked to forge a previously unidentified hypercycle, being composed of one "selfish" autocatalytic cycle (i.e., olefins-based cycle with lighter olefins as autocatalysts for catalyzing the formation of olefins) and three cross-catalysis cycles (with olefinic, MCP, and aromatic species as autocatalysts for catalyzing each other's formation). The unraveled dynamic autocatalytic cycles/network would facilitate the catalyst design and process control for MTH technology.
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Affiliation(s)
- Shanfan Lin
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yuchun Zhi
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Wei Chen
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Huan Li
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Wenna Zhang
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Caiyi Lou
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xinqiang Wu
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Shu Zeng
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Jianping Xiao
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Anmin Zheng
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, People's Republic of China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.,University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
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30
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Huang Y, Ma H, Xu Z, Qian W, Zhang H, Ying W. Direct Conversion of Syngas to Light Olefins over a ZnCrO x + H-SSZ-13 Bifunctional Catalyst. ACS OMEGA 2021; 6:10953-10962. [PMID: 34056248 PMCID: PMC8153927 DOI: 10.1021/acsomega.1c00751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
In recent years, bifunctional catalysts for the syngas-to-olefins (STO) reaction via the oxide-zeolite (OX-ZEO) strategy has been intensively investigated. However, the bifunctional catalyst containing H-SSZ-13 with a 100% H+-exchanging degree for the STO reaction has not been developed because of the high selectivity to paraffin. Here, we report a ZnCrO x + H-SSZ-13 bifunctional catalyst, which contains the submicron H-SSZ-13 with adequate acidic strength. Light olefins in hydrocarbon reached 70.8% at a CO conversion of 20.9% over the ZnCrO x + H-SSZ-13(23S) bifunctional catalyst at 653 K, 1.0 MPa, and GHSV = 6000 mL·g-1·h-1 after 800 min of STO reaction. The effect of CO and H2 on the C-C coupling was discussed by carrying out the methanol-to-olefins (MTO) reaction under a similar atmosphere as that of the STO reaction. H2 and CO should play a more dominant role than the conventional hydrogen transfer reaction on the undesired high selectivity of paraffins. These findings provide new insight into the design of the bifunctional catalyst for the STO process via the OX-ZEO strategy.
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Affiliation(s)
- Yuxuan Huang
- Engineering Research Center of Large
Scale Reactor Engineering and Technology, Ministry of Education, State
Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Hongfang Ma
- Engineering Research Center of Large
Scale Reactor Engineering and Technology, Ministry of Education, State
Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhiqiang Xu
- Engineering Research Center of Large
Scale Reactor Engineering and Technology, Ministry of Education, State
Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weixin Qian
- Engineering Research Center of Large
Scale Reactor Engineering and Technology, Ministry of Education, State
Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Haitao Zhang
- Engineering Research Center of Large
Scale Reactor Engineering and Technology, Ministry of Education, State
Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weiyong Ying
- Engineering Research Center of Large
Scale Reactor Engineering and Technology, Ministry of Education, State
Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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31
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Cnudde P, Redekop EA, Dai W, Porcaro NG, Waroquier M, Bordiga S, Hunger M, Li L, Olsbye U, Van Speybroeck V. Experimental and Theoretical Evidence for the Promotional Effect of Acid Sites on the Diffusion of Alkenes through Small-Pore Zeolites. Angew Chem Int Ed Engl 2021; 60:10016-10022. [PMID: 33496374 PMCID: PMC8251642 DOI: 10.1002/anie.202017025] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/25/2021] [Indexed: 12/18/2022]
Abstract
The diffusion of saturated and unsaturated hydrocarbons is of fundamental importance for many zeolite‐catalyzed processes. Transport of small alkenes in the confined zeolite pores can become hindered, resulting in a significant impact on the ultimate product selectivity and separation. Herein, intracrystalline light olefin/paraffin diffusion through the 8‐ring windows of zeolite SAPO‐34 is characterized by a complementary set of first‐principle molecular dynamics simulations, PFG‐NMR experiments, and pulse‐response temporal analysis of products measurements, yielding information at different length and time scales. Our results clearly show a promotional effect of the presence of Brønsted acid sites on the diffusion rate of ethene and propene, whereas transport of alkanes is found to be insensitive to the presence of acid sites. The enhanced diffusivity of unsaturated hydrocarbons is ascribed to the formation of favorable π–H interactions with acid protons, as confirmed by IR spectroscopy measurements. The acid site distribution is proven to be an important design parameter for optimizing product distributions and separations.
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Affiliation(s)
- Pieter Cnudde
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
| | - Evgeniy A Redekop
- Center for Materials Science and Nanotechnology (SMN), Department of Chemistry, University of Oslo, P.O. Box 1126 Blindern, 0318, Oslo, Norway
| | - Weili Dai
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
| | - Natale G Porcaro
- Department of Chemistry, NIS Centre of Excellence and INSTM Reference Center, University of Turin, Via P. Giuria 7, 10125 10, Torino, Italy
| | - Michel Waroquier
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
| | - Silvia Bordiga
- Department of Chemistry, NIS Centre of Excellence and INSTM Reference Center, University of Turin, Via P. Giuria 7, 10125 10, Torino, Italy
| | - Michael Hunger
- Institute of Chemical Technology, University of Stuttgart, 70550, Stuttgart, Germany
| | - Landong Li
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China
| | - Unni Olsbye
- Center for Materials Science and Nanotechnology (SMN), Department of Chemistry, University of Oslo, P.O. Box 1126 Blindern, 0318, Oslo, Norway
| | - Veronique Van Speybroeck
- Center for Molecular Modeling (CMM), Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
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32
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Huang Y, Ma H, Xu Z, Qian W, Zhang H, Ying W. Utilization of SAPO-18 or SAPO-35 in the bifunctional catalyst for the direct conversion of syngas to light olefins. RSC Adv 2021; 11:13876-13884. [PMID: 35423941 PMCID: PMC8697760 DOI: 10.1039/d1ra02087k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/07/2021] [Indexed: 12/02/2022] Open
Abstract
SAPO-18 and SAPO-35 were synthesized and utilized as the zeotype in the bifunctional catalyst for the STO process, respectively. SEM and Ar physisorption proved that SAPO-18 displayed abundant outer cages, and facilitated the diffusion of the reactant and products. NH3-TPD revealed the adequate acid strength of SAPO-18, thus ZnCrOx + SAPO-18 bifunctional catalyst showed high selectivity to light olefins during the whole stage of the STO process. 19.9% CO conversion and 68.6% light olefins selectivity (free of CO2) was achieved over ZnCrOx + SAPO-18(0.048) at 653 K, 1.0 MPa, GHSV = 6000 mL g−1 h−1. The catalytic performance was stable after 6000 minutes of reaction because of the good diffusibility of SAPO-18. GC-MS and TG demonstrated that the ZnCrOx + SAPO-35 bifunctional catalyst deactivated very quickly because of the severe formation of the heavy coke deposits, which should be attributed to the acidic properties of SAPO-35 and the poor diffusibility originating from its 2-dimensional channel system. Although the ZnCrOx + SAPO-35 bifunctional catalyst exhibited high CO conversion and light olefins selectivity at the early stage of the STO process as well, its catalytic performance was unsustainable. SAPO-18 and SAPO-35 were synthesized and utilized as the zeotype in the bifunctional catalyst for the STO process, respectively.![]()
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Affiliation(s)
- Yuxuan Huang
- Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252192 +86 21 64252151
| | - Hongfang Ma
- Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252192 +86 21 64252151
| | - Zhiqiang Xu
- Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252192 +86 21 64252151
| | - Weixin Qian
- Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252192 +86 21 64252151
| | - Haitao Zhang
- Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252192 +86 21 64252151
| | - Weiyong Ying
- Engineering Research Center of Large Scale Reactor Engineering and Technology, Ministry of Education, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China +86 21 64252192 +86 21 64252151
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33
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Zhong J, Han J, Wei Y, Liu Z. Catalysts and shape selective catalysis in the methanol-to-olefin (MTO) reaction. J Catal 2021. [DOI: 10.1016/j.jcat.2021.01.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Cnudde P, Redekop EA, Dai W, Porcaro NG, Waroquier M, Bordiga S, Hunger M, Li L, Olsbye U, Van Speybroeck V. Experimental and Theoretical Evidence for the Promotional Effect of Acid Sites on the Diffusion of Alkenes through Small‐Pore Zeolites. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Pieter Cnudde
- Center for Molecular Modeling (CMM) Ghent University Technologiepark 46 9052 Zwijnaarde Belgium
| | - Evgeniy A. Redekop
- Center for Materials Science and Nanotechnology (SMN) Department of Chemistry University of Oslo P.O. Box 1126 Blindern 0318 Oslo Norway
| | - Weili Dai
- School of Materials Science and Engineering & National Institute for Advanced Materials Nankai University Tianjin 300350 P. R. China
| | - Natale G. Porcaro
- Department of Chemistry NIS Centre of Excellence and INSTM Reference Center University of Turin Via P. Giuria 7 10125 10 Torino Italy
| | - Michel Waroquier
- Center for Molecular Modeling (CMM) Ghent University Technologiepark 46 9052 Zwijnaarde Belgium
| | - Silvia Bordiga
- Department of Chemistry NIS Centre of Excellence and INSTM Reference Center University of Turin Via P. Giuria 7 10125 10 Torino Italy
| | - Michael Hunger
- Institute of Chemical Technology University of Stuttgart 70550 Stuttgart Germany
| | - Landong Li
- School of Materials Science and Engineering & National Institute for Advanced Materials Nankai University Tianjin 300350 P. R. China
| | - Unni Olsbye
- Center for Materials Science and Nanotechnology (SMN) Department of Chemistry University of Oslo P.O. Box 1126 Blindern 0318 Oslo Norway
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35
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Minova IB, Barrow NS, Sauerwein AC, Naden AB, Cordes DB, Slawin AM, Schuyten SJ, Wright PA. Silicon redistribution, acid site loss and the formation of a core–shell texture upon steaming SAPO-34 and their impact on catalytic performance in the Methanol-to-Olefins (MTO) reaction. J Catal 2021. [DOI: 10.1016/j.jcat.2021.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Shi Z, Bhan A. Tuning the ethylene-to-propylene ratio in methanol-to-olefins catalysis on window-cage type zeolites. J Catal 2021. [DOI: 10.1016/j.jcat.2021.01.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Liu F, Wang B, Liu X. Structure-Directing Roles of Organic Molecules in the Formation of Aluminosilicate and Aluminophosphate Molecular Sieves Revealed by 2D 1 H DQ-SQ NMR Spectroscopy. Chemistry 2021; 27:1955-1960. [PMID: 32896027 DOI: 10.1002/chem.202003892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Indexed: 11/07/2022]
Abstract
Understanding of crystallization mechanisms of molecular sieves is driven by the broad range of usefulness and unique properties they possess. It is still difficult to obtain information related to the crystallization mechanism of molecular sieves, partly because the materials are generally prepared under hydrothermal conditions and the whole reaction happens in the "black box" autoclave. In this work, 2D 1 H DQ-SQ NMR results clearly demonstrate that it is not only the electrostatic interactions between organic structure-directing agents (OSDAs) and the framework, but also the correlation among OSDAs playing the dominant structural directing roles during the crystallization process. Our fundamental understanding of the crystallization mechanism of molecular sieves could be of great value to design and synthesize new molecular sieves with desirable structural properties.
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Affiliation(s)
- Fangyan Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Biao Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Xiaolong Liu
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
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38
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Sharma P, Sebastian J, Ghosh S, Creaser D, Olsson L. Recent advances in hydrogenation of CO2 into hydrocarbons via methanol intermediate over heterogeneous catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01913e] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review provides recent advances in the conversion of CO2 to methanol, methanol to hydrocarbons, and direct conversion of CO2 to hydrocarbons via methanol intermediate over various monofunctional and bifunctional solid catalysts.
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Affiliation(s)
- Poonam Sharma
- Competence Centre for Catalysis
- Chemical Engineering
- Chalmers University of Technology
- SE-412 96 Gothenburg
- Sweden
| | - Joby Sebastian
- Competence Centre for Catalysis
- Chemical Engineering
- Chalmers University of Technology
- SE-412 96 Gothenburg
- Sweden
| | - Sreetama Ghosh
- Competence Centre for Catalysis
- Chemical Engineering
- Chalmers University of Technology
- SE-412 96 Gothenburg
- Sweden
| | - Derek Creaser
- Competence Centre for Catalysis
- Chemical Engineering
- Chalmers University of Technology
- SE-412 96 Gothenburg
- Sweden
| | - Louise Olsson
- Competence Centre for Catalysis
- Chemical Engineering
- Chalmers University of Technology
- SE-412 96 Gothenburg
- Sweden
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39
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Smith AT, Plessow PN, Studt F. Density functional theory calculations of diffusion barriers of organic molecules through the 8-ring of H-SSZ-13. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2020.111033] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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40
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Xing S, Liu K, Wang T, Zhang R, Han M. Elucidation of the mechanism and structure–reactivity relationship in zeolite catalyzed alkylation of benzene with propylene. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02374d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The intrinsic mechanism and structure–reactivity relationship were systemically elucidated using the alkylation of benzene with propylene as a model reaction based on the periodic DFT calculations.
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Affiliation(s)
- Shiyong Xing
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Kaikai Liu
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Tiefeng Wang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Rufan Zhang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Minghan Han
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- P. R. China
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41
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Rui P, Wang B, Chen F, Xiang Y, Yang J, Guo T, Wu Z, Liao W, Shu X. The hydrothermal synthesis of hierarchical SAPO-34 with improved MTO performance. NEW J CHEM 2021. [DOI: 10.1039/d1nj01066b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two-step hydrothermal approach for the synthesis of hierarchical SAPO-34 in the absence of any mesoporogen.
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Affiliation(s)
- Peixin Rui
- National Engineering Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang
- China
| | - Baorong Wang
- National Engineering Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang
- China
- State Key Laboratory of Catalytic Material and Reaction Engineering
| | - Feibiao Chen
- National Engineering Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang
- China
| | - Yanjuan Xiang
- State Key Laboratory of Catalytic Material and Reaction Engineering
- Research Institute of Petroleum Processing
- SINOPEC
- Beijing 100083
- China
| | - Jianming Yang
- Xi’an Modern Chemistry Research Institute
- Xi’an 710065
- China
| | - Tao Guo
- National Engineering Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang
- China
| | - Zheng Wu
- National Engineering Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang
- China
| | - Weilin Liao
- National Engineering Research Center for Carbohydrate Synthesis
- Jiangxi Normal University
- Nanchang
- China
| | - Xingtian Shu
- State Key Laboratory of Catalytic Material and Reaction Engineering
- Research Institute of Petroleum Processing
- SINOPEC
- Beijing 100083
- China
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42
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Zhang J, Ren L, Mi Y, Luo P, Xu H, Guan Y, Peng H, Song S, Song W, Wu H, He M, Wu P. K + located in 6-membered rings of low-silica CHA enhancing the lifetime and propene selectivity in MTO. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00691f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Methanol-to-olefins (MTO) technology presently serves as a key to convert coal or natural gas to valuable hydrocarbons, in particular lower olefins.
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Affiliation(s)
- Jingyan Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Li Ren
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Yangyang Mi
- College of Chemistry, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi 330031, China
| | - Peng Luo
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Hao Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Yejun Guan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Honggen Peng
- College of Chemistry, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi 330031, China
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, 999 Xuefu Road, Nanchang, Jiangxi 330031, China
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Shaojia Song
- College of Science, China University of Petroleum (Beijing), Beijing, 102249, China
| | - Weiyu Song
- College of Science, China University of Petroleum (Beijing), Beijing, 102249, China
| | - Haihong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Mingyuan He
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
| | - Peng Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, China
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43
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Lezcano-Gonzalez I, Campbell E, Hoffman AEJ, Bocus M, Sazanovich IV, Towrie M, Agote-Aran M, Gibson EK, Greenaway A, De Wispelaere K, Van Speybroeck V, Beale AM. Insight into the effects of confined hydrocarbon species on the lifetime of methanol conversion catalysts. NATURE MATERIALS 2020; 19:1081-1087. [PMID: 32929250 DOI: 10.1038/s41563-020-0800-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
The methanol-to-hydrocarbons reaction refers collectively to a series of important industrial catalytic processes to produce either olefins or gasoline. Mechanistically, methanol conversion proceeds through a 'pool' of hydrocarbon species. For the methanol-to-olefins process, these species can be delineated broadly into 'desired' lighter olefins and 'undesired' heavier fractions that cause deactivation in a matter of hours. The crux in further catalyst optimization is the ability to follow the formation of carbonaceous species during operation. Here, we report the combined results of an operando Kerr-gated Raman spectroscopic study with state-of-the-art operando molecular simulations, which allowed us to follow the formation of hydrocarbon species at various stages of methanol conversion. Polyenes are identified as crucial intermediates towards formation of polycyclic aromatic hydrocarbons, with their fate determined largely by the zeolite topology. Notably, we provide the missing link between active and deactivating species, which allows us to propose potential design rules for future-generation catalysts.
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Affiliation(s)
- I Lezcano-Gonzalez
- Chemistry Department, University College London, London, UK.
- UK Catalysis Hub, Research Complex at Harwell, Didcot, UK.
| | - E Campbell
- Chemistry Department, University College London, London, UK
- UK Catalysis Hub, Research Complex at Harwell, Didcot, UK
| | - A E J Hoffman
- Center for Molecular Modeling, Ghent University, Zwijnaarde, Belgium
| | - M Bocus
- Center for Molecular Modeling, Ghent University, Zwijnaarde, Belgium
| | - I V Sazanovich
- Central Laser Facility, STFC, Research Complex at Harwell, Didcot, UK
| | - M Towrie
- Central Laser Facility, STFC, Research Complex at Harwell, Didcot, UK
| | - M Agote-Aran
- Chemistry Department, University College London, London, UK
- UK Catalysis Hub, Research Complex at Harwell, Didcot, UK
| | - E K Gibson
- Chemistry Department, University College London, London, UK
- UK Catalysis Hub, Research Complex at Harwell, Didcot, UK
- School of Chemistry, University of Glasgow, Glasgow, UK
| | - A Greenaway
- Chemistry Department, University College London, London, UK
- UK Catalysis Hub, Research Complex at Harwell, Didcot, UK
| | - K De Wispelaere
- Center for Molecular Modeling, Ghent University, Zwijnaarde, Belgium
| | - V Van Speybroeck
- Center for Molecular Modeling, Ghent University, Zwijnaarde, Belgium.
| | - A M Beale
- Chemistry Department, University College London, London, UK.
- UK Catalysis Hub, Research Complex at Harwell, Didcot, UK.
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44
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Xu Z, Ma H, Huang Y, Qian W, Zhang H, Ying W. Synthesis of Submicron SSZ-13 with Tunable Acidity by the Seed-Assisted Method and Its Performance and Coking Behavior in the MTO Reaction. ACS OMEGA 2020; 5:24574-24583. [PMID: 33015475 PMCID: PMC7528296 DOI: 10.1021/acsomega.0c03075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 09/03/2020] [Indexed: 06/11/2023]
Abstract
Submicron SSZ-13 with different acidities was synthesized successfully with the assistance of nanosized SSZ-13 seeds. The methanol-to-olefins (MTO) properties of submicron SSZ-13 were evaluated. The lifetime of submicron SSZ-13 was enhanced because of the crystal size reduction. The selectivity of light olefins was improved evidently at the early stage of the MTO reaction as the acidity density decreased. TG, GC-MS, and in situ UV/vis spectra were utilized to investigate coking behavior during the MTO reaction. It was found that the acidity density influences the nature and rate of coke formation. The majority of the hydrocarbon pool species over SSZ-13 with a low acidity density (125.2 μmol/g) were methylated benzene carbocations, while that over SSZ-13 with a high acidity density (330.2 μmol/g) were methylated naphthalene carbocations. The low acidity density of SSZ-13 can suppress the hydrogen transfer reaction and polyaromatic generation.
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45
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Yu B, Lou C, Zhang W, Xu S, Han J, Yu Z, Wei Y, Liu Z. Insight into the Dual Cycle Mechanism of Methanol-to-Olefins Reaction over SAPO-34 Molecular Sieve by Isotopic Tracer Studies. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0216-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Imaging spatiotemporal evolution of molecules and active sites in zeolite catalyst during methanol-to-olefins reaction. Nat Commun 2020; 11:3641. [PMID: 32686677 PMCID: PMC7371645 DOI: 10.1038/s41467-020-17355-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/24/2020] [Indexed: 11/09/2022] Open
Abstract
Direct visualization of spatiotemporal evolution of molecules and active sites during chemical transformation in individual catalyst crystal will accelerate the intuitive understanding of heterogeneous catalysis. So far, widespread imaging techniques can only provide limited information either with large probe molecules or in model catalyst of large size, which are beyond the interests of industrial catalysis. Herein, we demonstrate a feasible deep data approach via synergy of multiscale reaction-diffusion simulation and super-resolution structured illumination microscopy to illustrate the dynamical evolution of spatiotemporal distributions of gas molecules, carbonaceous species and acid sites in SAPO-34 zeolite crystals of several micrometers that are typically used in industrial methanol-to-olefins process. The profound insights into the inadequate utilization of activated acid sites and rapid deactivation are unveiled. The notable elucidation of molecular reaction-diffusion process at the scale of single catalyst crystal via this approach opens an interesting method for mechanism study in materials synthesis and catalysis.
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47
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Han J, Liu Z, Li H, Zhong J, Zhang W, Huang J, Zheng A, Wei Y, Liu Z. Simultaneous Evaluation of Reaction and Diffusion over Molecular Sieves for Shape-Selective Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02054] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jingfeng Han
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Zhiqiang Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P.R. China
| | - Hua Li
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Jiawei Zhong
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenna Zhang
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Jindou Huang
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P.R. China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins, State Energy Low Carbon Catalysis and Engineering R&D Center, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
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48
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Ham H, Jung HS, Kim HS, Kim J, Cho SJ, Lee WB, Park MJ, Bae JW. Gas-Phase Carbonylation of Dimethyl Ether on the Stable Seed-Derived Ferrierite. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05144] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hyungwon Ham
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Hyun Seung Jung
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Hyo Seok Kim
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Jihyeon Kim
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Suwon, Gyeonggi-do 16419, Republic of Korea
- Institute for Advanced Engineering (IAE), 175-28 Goan-ro 51, Yongin, Gyeonggi-do 17180, Republic of Korea
| | - Sung June Cho
- Department of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea
| | - Won Bo Lee
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Myung-June Park
- Department of Chemical Engineering and Department of Energy Systems Research, Ajou University, 206 Worldcup-ro, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Jong Wook Bae
- School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Suwon, Gyeonggi-do 16419, Republic of Korea
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Cnudde P, Demuynck R, Vandenbrande S, Waroquier M, Sastre G, Speybroeck VV. Light Olefin Diffusion during the MTO Process on H-SAPO-34: A Complex Interplay of Molecular Factors. J Am Chem Soc 2020; 142:6007-6017. [PMID: 32157875 DOI: 10.1021/jacs.9b10249] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The methanol-to-olefins process over H-SAPO-34 is characterized by its high shape selectivity toward light olefins. The catalyst is a supramolecular system consisting of nanometer-sized inorganic cages, decorated by Brønsted acid sites, in which organic compounds, mostly methylated benzene species, are trapped. These hydrocarbon pool species are essential to catalyze the methanol conversion but may also clog the pores. As such, diffusion of ethene and propene plays an essential role in determining the ultimate product selectivity. Enhanced sampling molecular dynamics simulations based on either force fields or density functional theory are used to determine how molecular factors influence the diffusion of light olefins through the 8-ring windows of H-SAPO-34. Our simulations show that diffusion through the 8-ring in general is a hindered process, corresponding to a hopping event of the diffusing molecule between neighboring cages. The loading of different methanol, alkene, and aromatic species in the cages may substantially slow down or facilitate the diffusion process. The presence of Brønsted acid sites in the 8-ring enhances the diffusion process due to the formation of a favorable π-complex host-guest interaction. Aromatic hydrocarbon pool species severely hinder the diffusion and their spatial distribution in the zeolite crystal may have a significant effect on the product selectivity. Herein, we unveil how molecular factors influence the diffusion of light olefins in a complex environment with confined hydrocarbon pool species, high olefin loadings, and the presence of acid sites by means of enhanced molecular dynamics simulations under operating conditions.
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Affiliation(s)
- Pieter Cnudde
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Ruben Demuynck
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Steven Vandenbrande
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Michel Waroquier
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - German Sastre
- Instituto de Tecnologia Quimica, UPV-CSIC Universidad Politecnica de Valencia. Avenida Los Naranjos s/n, 46022 Valencia, Spain
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Hua J, Dong X, Wang J, Chen C, Shi Z, Liu Z, Han Y. Methanol-to-Olefin Conversion over Small-Pore DDR Zeolites: Tuning the Propylene Selectivity via the Olefin-Based Catalytic Cycle. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05521] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jia Hua
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Xinglong Dong
- Physical Sciences and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Jianjian Wang
- Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Cailing Chen
- Physical Sciences and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Zhaohui Liu
- Physical Sciences and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
- Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Yu Han
- Physical Sciences and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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