1
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Xiao P, Wang Y, Wang L, Toyoda H, Nakamura K, Bekhti S, Lu Y, Huang J, Gies H, Yokoi T. Understanding the effect of spatially separated Cu and acid sites in zeolite catalysts on oxidation of methane. Nat Commun 2024; 15:2718. [PMID: 38548724 PMCID: PMC10978981 DOI: 10.1038/s41467-024-46924-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 03/12/2024] [Indexed: 04/01/2024] Open
Abstract
Unraveling the effect of spatially separated bifunctional sites on catalytic reactions is significant yet challenging. In this report, we investigate the role of spatial separation on the oxidation of methane in a series of Cu-exchanged aluminosilicate zeolites. Regulation of the bifunctional sites is done either through studying a physical mixture of Cu-exchanged zeolites and acidic zeolites or by systematically varying the Cu and acid density within a family of zeolite materials. We show that separated Cu and acid sites are beneficial for the formation of hydrocarbons while high-density Cu sites, which are closer together, facilitate the production of CO2. By contrast, a balance of the spatial separation of Cu and acid sites shows more favorable formation of methanol. This work will further guide approaches to methane oxidation to methanol and open an avenue for promoting hydrocarbon synthesis using methanol as an intermediate.
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Affiliation(s)
- Peipei Xiao
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
| | - Yong Wang
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
| | - Lizhuo Wang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Hiroto Toyoda
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
| | - Kengo Nakamura
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
| | - Samya Bekhti
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
| | - Yao Lu
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
| | - Jun Huang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Hermann Gies
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan
- Institute of Geology, Mineralogy und Geophysics, Ruhr-University Bochum, Bochum, 44780, Germany
| | - Toshiyuki Yokoi
- Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8501, Japan.
- iPEACE223 Inc. Konwa Building, 1-12-22 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
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2
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Wang Y, Zhao W, Chen X, Ji Y, Zhu X, Chen X, Mei D, Shi H, Lercher JA. Methane-H 2S Reforming Catalyzed by Carbon and Metal Sulfide Stabilized Sulfur Dimers. J Am Chem Soc 2024; 146:8630-8640. [PMID: 38488522 PMCID: PMC10979457 DOI: 10.1021/jacs.4c00738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/02/2024] [Accepted: 03/05/2024] [Indexed: 03/28/2024]
Abstract
H2S reforming of methane (HRM) provides a potential strategy to directly utilize sour natural gas for the production of COx-free H2 and sulfur chemicals. Several carbon allotropes were found to be active and selective for HRM, while the additional presence of transition metals led to further rate enhancements and outstanding stability (e.g., Ru supported on carbon black). Most metals are transformed to sulfides, but the carbon supports prevent sintering under the harsh reaction conditions. Supported by theoretical calculations, kinetic and isotopic investigations with representative catalysts showed that H2S decomposition and the recombination of surface H atoms are quasi-equilibrated, while the first C-H bond scission is the kinetically relevant step. Theory and experiments jointly establish that dynamically formed surface sulfur dimers are responsible for methane activation and catalytic turnovers on sulfide and carbon surfaces that are otherwise inert without reaction-derived active sites.
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Affiliation(s)
- Yong Wang
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
- School
of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Wenru Zhao
- School
of Materials Science and Engineering, Tiangong
University, Tianjin 300387, P. R. China
| | - Xiaofeng Chen
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Yinjie Ji
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Xilei Zhu
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Xiaomai Chen
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Donghai Mei
- School
of Materials Science and Engineering, Tiangong
University, Tianjin 300387, P. R. China
| | - Hui Shi
- School
of Chemistry and Chemical Engineering, Yangzhou
University, Yangzhou 225002, P. R. China
| | - Johannes A. Lercher
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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3
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Yan J, Luo Y, Zhu M, Yang B, Shen X, Wang Z, Zhuang Z, Yu Y. General and Scalable Synthesis of Mesoporous 2D MZrO 2 (M = Co, Mn, Ni, Cu, Fe) Nanocatalysts by Amorphous-to-Crystalline Transformation. Small 2024:e2308016. [PMID: 38308412 DOI: 10.1002/smll.202308016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/21/2023] [Indexed: 02/04/2024]
Abstract
In modern heterogeneous catalysis, it remains highly challenging to create stable, low-cost, mesoporous 2D photo-/electro-catalysts that carry atomically dispersed active sites. In this work, a general shape-preserving amorphous-to-crystalline transformation (ACT) strategy is developed to dope various transition metal (TM) heteroatoms in ZrO2 , which enabled the scalable synthesis of TMs/oxide with a mesoporous 2D structure and rich defects. During the ACT process, the amorphous MZrO2 nanoparticles (M = Fe, Ni, Cu, Co, Mn) are deposited within a confined space created by the NaCl template, and they transform to crystalline 2D ACT-MZrO2 nanosheets in a shape-preserving manner. The interconnected crystalline ACT-MZrO2 nanoparticles thus inherit the same structure as the original MZrO2 precursor. Owing to its rich active sites on the surface and abundant oxygen vacancies (OVs), ACT-CoZrO2 gives superior performance in catalyzing the CO2 -to-syngas conversion as demonstrated by experiments and theoretical calculations. The ACT chemistry opens a general route for the scalable synthesis of advanced catalysts with precise microstructure by reconciliating the control of crystalline morphologies and the dispersion of heteroatoms.
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Affiliation(s)
- Jiawei Yan
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Yifei Luo
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Mengyao Zhu
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Bixia Yang
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Xiaoxin Shen
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Zhiqi Wang
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Zanyong Zhuang
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
| | - Yan Yu
- College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
- Key Laboratory of Advanced Materials Technologies, Fuzhou University, Fuzhou, 350108, China
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4
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Wang P, Shi R, Zhao J, Zhang T. Photodriven Methane Conversion on Transition Metal Oxide Catalyst: Recent Progress and Prospects. Adv Sci (Weinh) 2024; 11:e2305471. [PMID: 37882341 PMCID: PMC10885660 DOI: 10.1002/advs.202305471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/24/2023] [Indexed: 10/27/2023]
Abstract
Methane as the main component in natural gas is a promising chemical raw material for synthesizing value-added chemicals, but its harsh chemical conversion process often causes severe energy and environment concerns. Photocatalysis provides an attractive path to active and convert methane into various products under mild conditions with clean and sustainable solar energy, although many challenges remain at present. In this review, recent advances in photocatalytic methane conversion are systematically summarized. As the basis of methane conversion, the activation of methane is first elucidated from the structural basis and activation path of methane molecules. The study is committed to categorizing and elucidating the research progress and the laws of the intricate methane conversion reactions according to the target products, including photocatalytic methane partial oxidation, reforming, coupling, combustion, and functionalization. Advanced photocatalytic reactor designs are also designed to enrich the options and reliability of photocatalytic methane conversion performance evaluation. The challenges and prospects of photocatalytic methane conversion are also discussed, which in turn offers guidelines for methane-conversion-related photocatalyst exploration, reaction mechanism investigation, and advanced photoreactor design.
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Affiliation(s)
- Pu Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiaqi Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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5
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Zhao K, Gao Y, Wang X, Lis BM, Liu J, Jin B, Smith J, Huang C, Gao W, Wang X, Wang X, Zheng A, Huang Z, Hu J, Schömacker R, Wachs IE, Li F. Lithium carbonate-promoted mixed rare earth oxides as a generalized strategy for oxidative coupling of methane with exceptional yields. Nat Commun 2023; 14:7749. [PMID: 38012194 PMCID: PMC10682025 DOI: 10.1038/s41467-023-43682-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/16/2023] [Indexed: 11/29/2023] Open
Abstract
The oxidative coupling of methane to higher hydrocarbons offers a promising autothermal approach for direct methane conversion, but its progress has been hindered by yield limitations, high temperature requirements, and performance penalties at practical methane partial pressures (~1 atm). In this study, we report a class of Li2CO3-coated mixed rare earth oxides as highly effective redox catalysts for oxidative coupling of methane under a chemical looping scheme. This catalyst achieves a single-pass C2+ yield up to 30.6%, demonstrating stable performance at 700 °C and methane partial pressures up to 1.4 atm. In-situ characterizations and quantum chemistry calculations provide insights into the distinct roles of the mixed oxide core and Li2CO3 shell, as well as the interplay between the Pr oxidation state and active peroxide formation upon Li2CO3 coating. Furthermore, we establish a generalized correlation between Pr4+ content in the mixed lanthanide oxide and hydrocarbons yield, offering a valuable optimization strategy for this class of oxidative coupling of methane redox catalysts.
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Affiliation(s)
- Kun Zhao
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Yunfei Gao
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, China.
| | - Xijun Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA
| | - Bar Mosevitzky Lis
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, USA
| | - Junchen Liu
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Baitang Jin
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Jacob Smith
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Chuande Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Wenpei Gao
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Xiaodong Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xin Wang
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, China
| | - Anqing Zheng
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Zhen Huang
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Jianli Hu
- Department of Chemical & Biomedical Engineering, West Virginia University, Morgantown, WV, USA
| | - Reinhard Schömacker
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Berlin, Germany
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, USA.
| | - Fanxing Li
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA.
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6
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Cheng Q, Li G, Yao X, Zheng L, Wang J, Emwas AH, Castaño P, Ruiz-Martínez J, Han Y. Maximizing Active Fe Species in ZSM-5 Zeolite Using Organic-Template-Free Synthesis for Efficient Selective Methane Oxidation. J Am Chem Soc 2023; 145:5888-5898. [PMID: 36786783 PMCID: PMC10021013 DOI: 10.1021/jacs.2c13351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
The selective oxidation of CH4 in the aqueous phase to produce valuable chemicals has attracted considerable attention due to its mild reaction conditions and simple process. As the most widely studied catalyst for this reaction, Fe-ZSM-5 demonstrates high intrinsic activity and selectivity; however, Fe-ZSM-5 prepared using conventional methods has a limited number of active Fe sites, resulting in low CH4 conversion per unit mass of the catalyst. This study reports a facile organic-template-free synthesis strategy that enables the incorporation of more Fe into the zeolite framework with a higher dispersion degree compared to conventional synthesis methods. Because framework Fe incorporated in this way is more readily transformed into isolated extra-framework Fe species under thermal treatment, the overall effect is that Fe-ZSM-5 prepared using this method (Fe-HZ5-TF) has 3 times as many catalytically active sites as conventional Fe-ZSM-5. When used for the selective oxidation of CH4 with 0.5 M H2O2 at 75 °C, Fe-HZ5-TF produced a high C1 oxygenate yield of 109.4 mmol gcat-1 h-1 (a HCOOH selectivity of 91.1%), surpassing other catalysts reported to date. Spectroscopic characterization and density functional theory calculations revealed that the active sites in Fe-HZ5-TF are mononuclear Fe species in the form of [(H2O)3Fe(IV)═O]2+ bound to Al pairs in the zeolite framework. This differs from conventional Fe-ZSM-5, where binuclear Fe acts as the active site. Analysis of the catalyst and product evolution during the reaction suggests a radical-driven pathway to explain CH4 activation at the mononuclear Fe site and subsequent conversion to C1 oxygenates.
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Affiliation(s)
- Qingpeng Cheng
- Physical Sciences and Engineering Division, Advanced Membranes and Porous Materials (AMPM) Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.,KAUST Catalysis Center (KCC), KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Guanna Li
- Biobased Chemistry and Technology, Wageningen University & Research, Bornse Weilanden 9, Wageningen 6708WG, The Netherlands.,Laboratory of Organic Chemistry, Wageningen University & Research, Stippeneng 4, Wageningen 6708WE, The Netherlands
| | - Xueli Yao
- KAUST Catalysis Center (KCC), KAUST, Thuwal 23955-6900, Saudi Arabia
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 China
| | - Junhu Wang
- Center for Advanced Mössbauer Spectroscopy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023 China
| | - Abdul-Hamid Emwas
- Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Pedro Castaño
- KAUST Catalysis Center (KCC), KAUST, Thuwal 23955-6900, Saudi Arabia
| | | | - Yu Han
- Physical Sciences and Engineering Division, Advanced Membranes and Porous Materials (AMPM) Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.,KAUST Catalysis Center (KCC), KAUST, Thuwal 23955-6900, Saudi Arabia
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7
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Zanina A, Kondratenko VA, Lund H, Li J, Chen J, Li Y, Jiang G, Kondratenko EV. Performance-defining factors of (MnOx)-M2WO4/SiO2 (M=Na, K, Rb or Cs) catalysts in oxidative coupling of methane. J Catal 2023. [DOI: 10.1016/j.jcat.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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8
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Si J, Zhao G, Lan T, Ni J, Sun W, Liu Y, Lu Y. Insight into the Role of Na 2WO 4 in a Low-Temperature Light-off Mn 7SiO 12–Na 2WO 4/Cristobalite Catalyst for Oxidative Coupling of Methane. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Jiaqi Si
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
| | - Guofeng Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
| | - Tian Lan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
| | - Jiayong Ni
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
| | - Weidong Sun
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
| | - Ye Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
| | - Yong Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering East China Normal University, Shanghai200062, China
- Institute of Eco-Chongming, Shanghai202162, China
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9
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Wang Y, Tian Y, Pan SY, Snyder SW. Catalytic Processes to Accelerate Decarbonization in a Net-Zero Carbon World. ChemSusChem 2022; 15:e202201290. [PMID: 36198669 DOI: 10.1002/cssc.202201290] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/06/2022] [Indexed: 06/16/2023]
Abstract
Reducing carbon dioxide emissions is one of the critical challenges to mitigate global climate change, which is having detrimental impacts on society and the environment. Fossil fuel combustion in transportation, power generation, and industrial processes is the dominant contributor to carbon emissions. Over the past decades, sustainable solutions and strategies have been investigated and developed to enable decarbonization. Catalysis plays an essential role to address this global challenge by increasing energy efficiency, reducing carbon emissions, capturing carbon dioxide, and utilizing clean energy sources to displace fossil fuels. In this Review, the role of catalysis in reducing energy demand was discussed, enhancing process efficiency, displacing carbon-intensive feedstocks and products, and therefore, reducing carbon emissions. Recent advances in catalyst development were summarized, focusing on applications to enhance industrial processes efficiency and enable utilization of clean energy sources. Emerging approaches in catalysis were reviewed, including the manufacture of iron and steel, direct air capture of CO2 , production of ethylene, ammonia, and sustainable aviation fuels, plastic recycling, and the synthesis of biobased plastics. The Review was concluded with suggested research directions to achieve a carbon net-zero world.
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Affiliation(s)
- Yixiao Wang
- Idaho National Laboratory, Idaho Falls, ID 83415, USA
| | - Yuan Tian
- Idaho National Laboratory, Idaho Falls, ID 83415, USA
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, USA
| | - Shu-Yuan Pan
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, 10617, Taiwan ROC
| | - Seth W Snyder
- Idaho National Laboratory, Idaho Falls, ID 83415, USA
- Northwestern University, Evanston, IL 60208, USA
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10
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Wang J, Cai L, Cao Z, Zhu X, Yang W. Perovskite catalysts for oxidative coupling of methane improved by Y‐doping. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jingyi Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- University of Chinese Academy of Sciences Beijing China
| | - Lili Cai
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
| | - Zhongwei Cao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
| | - Xuefeng Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- University of Chinese Academy of Sciences Beijing China
| | - Weishen Yang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- University of Chinese Academy of Sciences Beijing China
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11
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Aireddy DR, Roy A, Cullen DA, Ding K. TiOx-supported Na-Mn-W oxides for the oxidative coupling of methane. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Zanina A, Kondratenko VA, Lund H, Li J, Chen J, Li Y, Jiang G, Kondratenko EV. The Role of Adsorbed and Lattice Oxygen Species in Product Formation in the Oxidative Coupling of Methane over M 2WO 4/SiO 2 (M = Na, K, Rb, Cs). ACS Catal 2022. [DOI: 10.1021/acscatal.2c04916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Anna Zanina
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059Rostock, Germany
| | - Vita A. Kondratenko
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059Rostock, Germany
| | - Henrik Lund
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059Rostock, Germany
| | - Jianshu Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing102249, People’s Republic of China
| | - Juan Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing102249, People’s Republic of China
| | - Yuming Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing102249, People’s Republic of China
| | - Guiyuan Jiang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing102249, People’s Republic of China
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13
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Wang Y, Sourav S, Malizia JP, Thompson B, Wang B, Kunz MR, Nikolla E, Fushimi R. Deciphering the Mechanistic Role of Individual Oxide Phases and Their Combinations in Supported Mn–Na 2WO 4 Catalysts for Oxidative Coupling of Methane. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yixiao Wang
- Catalysis and Transient Kinetics Group, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Sagar Sourav
- Catalysis and Transient Kinetics Group, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jason P. Malizia
- Catalysis and Transient Kinetics Group, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Brooklyne Thompson
- Catalysis and Transient Kinetics Group, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
- Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Bingwen Wang
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - M. Ross Kunz
- Catalysis and Transient Kinetics Group, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Eranda Nikolla
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, United States
| | - Rebecca Fushimi
- Catalysis and Transient Kinetics Group, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
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14
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Song H, Ye J. Direct photocatalytic conversion of methane to value-added chemicals. Trends in Chemistry 2022. [DOI: 10.1016/j.trechm.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Song S, Ye L, Xie K. Sr 2Fe 1.575Mo 0.5O 6-δ Promotes the Conversion of Methane to Ethylene and Ethane. Membranes (Basel) 2022; 12:822. [PMID: 36135841 PMCID: PMC9504262 DOI: 10.3390/membranes12090822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 06/16/2023]
Abstract
Oxidative coupling of methane can produce various valuable products, such as ethane and ethylene, and solid oxide electrolysis cells (SOECs) can electrolyze CH4 to produce C2H4 and C2H6. In this work, Sr2Fe1.575Mo0.5O6-δ electrode materials were prepared by impregnation and in situ precipitation, and Sr2Fe1.5Mo0.5O6-δ was taken as a reference to study the role of metal-oxide interfaces in the catalytic process. When the Fe/Sr2Fe1.575Mo0.5O6-δ interface is well constructed, the selectivity for C2 can reach 78.18% at 850 °C with a potential of 1.2 V, and the conversion rate of CH4 is 11.61%. These results further prove that a well-constructed metal-oxide interface significantly improves the catalytic activity and facilitates the reaction.
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Affiliation(s)
- Shiqi Song
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lingting Ye
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
- Advanced Energy Science and Technology Guangdong Laboratory, 29 Sanxin North Road, Huizhou 116023, China
| | - Kui Xie
- Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
- Advanced Energy Science and Technology Guangdong Laboratory, 29 Sanxin North Road, Huizhou 116023, China
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16
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Zhao G, Ni J, Si J, Sun W, Lu Y. Low-Temperature Light-off MnOx-Na2WO4-Based Catalysts: A Step Forward to OCM Process Industrialization. Chemphyschem 2022; 23:e202200365. [PMID: 35838245 DOI: 10.1002/cphc.202200365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/05/2022] [Indexed: 11/05/2022]
Abstract
Oxidative coupling of methane (OCM) catalyzed by MnOx-Na2WO4-based catalysts has great industrial potential to convert CH4 directly to C2-3 products, but the high light-off temperature is a big challenge to OCM commercialization. The reaction mechanism studies disclosed that O2/CH4-activation relevant "Mn2+↔Mn3+" redox cycle is tightly linked with the catalyst light-off. One concept is thus put forward that the OCM light-off temperature could be lowered once a "Mn2+↔Mn3+" redox cycle was established to be triggered at low temperature over MnOx-Na2WO4-based catalysts. The relevant studies in recent years are reviewed, showing that the establishment of low-temperature light-off "Mn2+↔Mn3+" redox cycle over the MnOx-Na2WO4-based catalysts indeed works effectively toward a low-temperature light-off OCM process. Moreover, three perspectives for the OCM industrialization are discussed based on this concept, including monolithic catalyst, fluidized-bed method and chemical-looping process.
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Affiliation(s)
- Guofeng Zhao
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Jiayong Ni
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Jiaqi Si
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Weidong Sun
- East China Normal University, School of Chemistry and Molecular Engineering, CHINA
| | - Yong Lu
- East China Normal University, School of Chemistry and Molecular Engineering, 3663 North Zhongshan Road, 200062, Shanghai, CHINA
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17
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Lezcano G, Kulkarni SR, Velisoju VK, Musteata VE, Hita I, Ramirez A, Dikhtiarenko A, Gascon J, Castaño P. Effect of the particle blending-shaping method and silicon carbide crystal phase for Mn-Na-W/SiO2-SiC catalyst in oxidative coupling of methane. Molecular Catalysis 2022. [DOI: 10.1016/j.mcat.2022.112399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Sourav S, Kiani D, Wang Y, Baltrusaitis J, Fushimi RR, Wachs IE. Molecular structure and catalytic promotional effect of Mn on supported Na2WO4/SiO2 catalysts for oxidative coupling of methane (OCM) reaction. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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19
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Wang Y, Wang B, Sourav S, Batchu R, Fang Z, Kunz MR, Yablonsky G, Nikolla E, Fushimi R. Mechanistic pathways and role of oxygen in oxidative coupling of methane derived from transient kinetic studies. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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20
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Ramos-yataco J, Notestein J. Assessment of catalysts for oxidative coupling of methane and ethylene. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Si J, Zhao G, Sun W, Liu J, Guan C, Yang Y, Shi XR, Lu Y. Oxidative Coupling of Methane: Examining the Inactivity of the MnO x -Na 2 WO 4 /SiO 2 Catalyst at Low Temperature. Angew Chem Int Ed Engl 2022; 61:e202117201. [PMID: 35181983 DOI: 10.1002/anie.202117201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Indexed: 11/07/2022]
Abstract
Oxidative coupling of methane (OCM) catalyzed by MnOx -Na2 WO4 /SiO2 has great industrial promise to convert methane directly to C2-3 products, but its high light-off temperature is the most challenging obstacle to commercialization and its working mechanism is still a mystery. We report the discovery of a low-temperature active and selective MnOx -Na2 WO4 /SiO2 catalyst enriched with Q2 units in the SiO2 carrier, being capable of converting 23 % CH4 with 72 % C2-3 selectivity at 660 °C. From experiments and theoretical calculations, a large number of Q2 units in the MnOx -Na2 WO4 /SiO2 catalyst is a trigger for markedly lowering the light-off temperature of the Mn3+ ↔Mn2+ redox cycle involved in the OCM reaction because of the easy formation of MnSiO3 . Notably, the MnSiO3 formation proceeds merely through the SiO2 -involved reaction in the presence of Na2 WO4 : Mn7 SiO12 +6 SiO2 ↔7 MnSiO3 +1.5 O2 . The Na2 WO4 not only drives the light-off of this cycle but also gets it working with substantial selectivity toward C2-3 products. Our findings shine a light on the rational design of more advanced MnOx -Na2 WO4 based OCM catalysts through establishing new Mn3+ ↔Mn2+ redox cycles with lowered light-off temperature.
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Affiliation(s)
- Jiaqi Si
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Guofeng Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Weidong Sun
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Jincun Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China
| | - Cairu Guan
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai, 201210, China
| | - Yong Yang
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road, Shanghai, 201210, China
| | - Xue-Rong Shi
- Department of Materials Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Yong Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai, 200062, China.,Institute of Eco-Chongming, Shanghai, 202162, China
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22
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Si J, Zhao G, Sun W, Liu J, Guan C, Yang Y, Shi XR, Lu Y. Oxidative Coupling of Methane: Examining the Inactivity of the MnOx‐Na2WO4/SiO2 Catalyst at Low Temperature. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117201] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiaqi Si
- East China Normal University School of chemistry and molecular engineering CHINA
| | - Guofeng Zhao
- East China Normal University School of chemistry and molecular engineering CHINA
| | - Weidong Sun
- East China Normal University School of chemistry and molecular engineering CHINA
| | - Jincun Liu
- East China Normal University Scool of chemistry and molecular engineering CHINA
| | - Cairu Guan
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of physical Science and Technology CHINA
| | - Yong Yang
- ShanghaiTech University - Zhangjiang Campus: ShanghaiTech University School of physical science and technology CHINA
| | - Xue-Rong Shi
- Shanghai University of Engineering Science - Songjiang Campus: Shanghai University of Engineering Science Department of Materials Engineering CHINA
| | - Yong Lu
- East China Normal University School of Chemistry and Molecular Engineering 3663 North Zhongshan Road 200062 Shanghai CHINA
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23
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Tiyatha W, Chukeaw T, Sringam S, Witoon T, Chareonpanich M, Rupprechter G, Seubsai A. Oxidative coupling of methane-comparisons of MnTiO 3-Na 2WO 4 and MnO x-TiO 2-Na 2WO 4 catalysts on different silica supports. Sci Rep 2022; 12:2595. [PMID: 35173240 DOI: 10.1038/s41598-022-06598-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 01/21/2022] [Indexed: 11/09/2022] Open
Abstract
The oxidative coupling of methane (OCM) converts CH4 to value-added chemicals (C2+), such as olefins and paraffin. For a series of MnTiO3-Na2WO4 (MnTiO3-NW) and MnOx-TiO2-Na2WO4 (Mn-Ti-NW), the effect of loading of MnTiO3 or MnOx-TiO2, respectively, on two different supports (sol-gel SiO2 (SG) and commercial fumed SiO2 (CS)) was examined. The catalyst with the highest C2+ yield (21.6% with 60.8% C2+ selectivity and 35.6% CH4 conversion) was 10 wt% MnTiO3-NW/SG with an olefins/paraffin ratio of 2.2. The catalyst surfaces with low oxygen-binding energies were associated with high CH4 conversion. Stability tests conducted for over 24 h revealed that SG-supported catalysts were more durable than those on CS because the active phase (especially Na2WO4) was more stable in SG than in CS. With the use of SG, the activity of MnTiO3-NW was not substantially different from that of Mn-Ti-NW, especially at high metal loading.
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24
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Chen K, Tian H, Li B, Rangarajan S. A chemistry‐inspired neural network kinetic model for oxidative coupling of methane from high‐throughput data. AIChE J 2022. [DOI: 10.1002/aic.17584] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Kexin Chen
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem Pennsylvania USA
| | - Huijie Tian
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem Pennsylvania USA
| | - Bowen Li
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem Pennsylvania USA
| | - Srinivas Rangarajan
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem Pennsylvania USA
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25
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Aydin Z, Zanina A, Kondratenko VA, Rabeah J, Li J, Chen J, Li Y, Jiang G, Lund H, Bartling S, Linke D, Kondratenko EV. Effects of N2O and Water on Activity and Selectivity in the Oxidative Coupling of Methane over Mn–Na2WO4/SiO2: Role of Oxygen Species. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04915] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zeynep Aydin
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Anna Zanina
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Vita A. Kondratenko
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Jabor Rabeah
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Jianshu Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, People’s Republic of China
| | - Juan Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, People’s Republic of China
| | - Yuming Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, People’s Republic of China
| | - Guiyuan Jiang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Beijing 102249, People’s Republic of China
| | - Henrik Lund
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Stephan Bartling
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - David Linke
- Leibniz Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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26
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Li D, Yoshida S, Siritanaratkul B, Garcia-Esparza AT, Sokaras D, Ogasawara H, Takanabe K. Transient Potassium Peroxide Species in Highly Selective Oxidative Coupling of Methane over an Unmolten K 2WO 4/SiO 2 Catalyst Revealed by In Situ Characterization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04206] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Duanxing Li
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shintaro Yoshida
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Bhavin Siritanaratkul
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Angel T. Garcia-Esparza
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
| | - Dimosthenis Sokaras
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
| | - Hirohito Ogasawara
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, California 94025, United States
| | - Kazuhiro Takanabe
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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27
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Kiani D, Sourav S, Wachs IE, Baltrusaitis J. A combined computational and experimental study of methane activation during oxidative coupling of methane (OCM) by surface metal oxide catalysts. Chem Sci 2021; 12:14143-14158. [PMID: 34760199 PMCID: PMC8565385 DOI: 10.1039/d1sc02174e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 10/04/2021] [Indexed: 11/21/2022] Open
Abstract
The experimentally validated computational models developed herein, for the first time, show that Mn-promotion does not enhance the activity of the surface Na2WO4 catalytic active sites for CH4 heterolytic dissociation during OCM. Contrary to previous understanding, it is demonstrated that Mn-promotion poisons the surface WO4 catalytic active sites resulting in surface WO5 sites with retarded kinetics for C-H scission. On the other hand, dimeric Mn2O5 surface sites, identified and studied via ab initio molecular dynamics and thermodynamics, were found to be more efficient in activating CH4 than the poisoned surface WO5 sites or the original WO4 sites. However, the surface reaction intermediates formed from CH4 activation over the Mn2O5 surface sites are more stable than those formed over the Na2WO4 surface sites. The higher stability of the surface intermediates makes their desorption unfavorable, increasing the likelihood of over-oxidation to CO x , in agreement with the experimental findings in the literature on Mn-promoted catalysts. Consequently, the Mn-promoter does not appear to have an essential positive role in synergistically tuning the structure of the Na2WO4 surface sites towards CH4 activation but can yield MnO x surface sites that activate CH4 faster than Na2WO4 surface sites, but unselectively.
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Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
| | - Sagar Sourav
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
| | - Israel E Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
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