1
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Martínez C, Vidal-Moya A, Yilmaz B, Kelkar CP, Corma A. Minimizing rare earth content of FCC catalysts: Understanding the fundamentals on combined P-La stabilization. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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2
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Partial Incorporation of La3+ in Beta Zeolite for Isobutane/1-Butene Alkylation. Top Catal 2022. [DOI: 10.1007/s11244-022-01665-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Hydrodesulfurization on Supported CoMoS2 Catalysts Ex Ammonium Tetrathiomolybdate: Effects of Support Morphology and Al Modification Method. Top Catal 2022. [DOI: 10.1007/s11244-022-01647-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Comparative catalytic study on butene/isobutane alkylation over LaX and CeX zeolites: The influence of calcination atmosphere. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.05.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Achieving acetone efficient deep decomposition by strengthening reactants adsorption and activation over difunctional Au(OH)K x/hierarchical MFI catalyst. J Colloid Interface Sci 2022; 612:504-515. [PMID: 35007876 DOI: 10.1016/j.jcis.2021.12.184] [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: 11/10/2021] [Revised: 12/16/2021] [Accepted: 12/29/2021] [Indexed: 11/23/2022]
Abstract
Realizing the simultaneous adsorption and activation of O2 and reactants over supported noble metal catalysts is crucial for the oxidation of organic hydrocarbons. Herein, we report a facile one-step ethylene glycol reduction method to synthesize difunctional Au(OH)Kx sites, which were anchored on a hierarchical hollow MFI support and adopted for acetone decomposition. The alkali ion-associated adjacent surface hydroxyl groups were coordinated with Au nanoparticles, resulting in partially oxidized Au1+ sites with improved dispersion. The results obtained from exclusive ex situ and in situ experiments illustrated that the proper content of K and hydroxyl groups significantly enhanced the adsorption of surface O2 and acetone molecules around the Au sites simultaneously, whereas the excess K species inhibited the catalytic performance by blocking the pore structure and decreasing the acidity of catalysts. The Au(OH)K0.7/h-MFI catalyst exhibited the highest efficiency for acetone oxidation, over which 1500 ppm acetone can be completely oxidized at just 280 °C with an extremely low activation energy of 32.5 kJ mol-1. The carbonate species were detected as the main intermediates during acetone decomposition over the difunctional Au(OH)Kx sites through a Langmuir - Hinshelwood (L - H) mechanism. This finding paves the way for designing and constructing efficient functional active sites for the complete oxidation of hydrocarbons.
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6
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van Vreeswijk SH, Weckhuysen BM. Emerging Analytical Methods to Characterize Zeolite-Based Materials. Natl Sci Rev 2022; 9:nwac047. [PMID: 36128456 PMCID: PMC9477204 DOI: 10.1093/nsr/nwac047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/23/2022] [Accepted: 02/28/2022] [Indexed: 11/23/2022] Open
Abstract
Zeolites and zeolitic materials are, through their use in numerous conventional and sustainable applications, very important to our daily lives, including to foster the necessary transition to a more circular society. The characterization of zeolite-based materials has a tremendous history and a great number of applications and properties of these materials have been discovered in the past decades. This review focuses on recently developed novel as well as more conventional techniques applied with the aim of better understanding zeolite-based materials. Recently explored analytical methods, e.g. atom probe tomography, scanning transmission X-ray microscopy, confocal fluorescence microscopy and photo-induced force microscopy, are discussed on their important contributions to the better understanding of zeolites as they mainly focus on the micro- to nanoscale chemical imaging and the revelation of structure–composition–performance relationships. Some other techniques have a long and established history, e.g. nuclear magnetic resonance, infrared, neutron scattering, electron microscopy and X-ray diffraction techniques, and have gone through increasing developments allowing the techniques to discover new and important features in zeolite-based materials. Additional to the increasing application of these methods, multiple techniques are nowadays used to study zeolites under working conditions (i.e. the in situ/operando mode of analysis) providing new insights in reaction and deactivation mechanisms.
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Affiliation(s)
- S H van Vreeswijk
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - B M Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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7
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Rabia BS, Sushkevich VL, van Bokhoven JA. Correlating Lewis Acid Activity to Extra-Framework Aluminum species in Zeolite Y Introduced by Ion-Exchange. J Catal 2022. [DOI: 10.1016/j.jcat.2022.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Zhang Y, Zhu H, Zhang T, Li J, Chen J, Peng Y, Li J. Revealing the Synergistic Deactivation Mechanism of Hydrothermal Aging and SO 2 Poisoning on Cu/SSZ-13 under SCR Condition. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:1917-1926. [PMID: 34856804 DOI: 10.1021/acs.est.1c06068] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In real-world application, Cu/SSZ-13 simultaneously suffers severe deactivation from hydrothermal aging and SO2 poisoning during the periodic regeneration of diesel particulate filter (DPF). Herein, we first investigated the synergistic deactivation mechanism of hydrothermal aging and SO2 poisoning on Cu/SSZ-13 under SCR condition. Hydrothermal aging alone induces more severe degradation of selective catalytic reduction (SCR) performance than SO2 poisoning alone, while the presence of SO2 during hydrothermal aging causes further worse SCR performance compared with hydrothermal aging alone. Hydrothermal aging not only damages Si-OH-Al sites, particularly in four-membered ring (4MR) of the CHA cage, but also brings the conversion of ZCuOH, leading to the formation of inactive CuO/CuAlOx species. By contrast, SO2 poisoning alone is more prone to promote the transformation of ZCuOH to Z2Cu. Synergistic deactivation of hydrothermal aging and SO2 poisoning would exacerbate the damage of Si-OH-Al sites and then the formation of CuO/CuAlOx species. These results are expected to assist the knowledge-based catalyst design for diesel aftertreatment applications.
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Affiliation(s)
- Yani Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Hongchang Zhu
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Tao Zhang
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Jie Li
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yue Peng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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9
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Yang Z, Zhang R, Liu R, Zhang S. Elucidating the Zeolite Particle Size Effect on Butene/Isobutane Alkylation. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c02038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhiqiang Yang
- School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100049, China
| | - Ruirui Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100049, China
| | - Ruixia Liu
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100049, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Suojiang Zhang
- School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100049, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, PR China
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10
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Loricera CV, Navarro Yerga R, Barrio L, Pawelec B, Fierro JLG. Synergistic Effect in Vapor Phase Hydrodeoxygenation on USY Zeolite Supported Ir–Pt Catalyst: Role of Pentacoordinated Al 3+ Ions. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Laura Barrio
- Instituto de Catálisis y Petroleoquímica, CSIC, Madrid, 28049, Spain
| | - Barbara Pawelec
- Instituto de Catálisis y Petroleoquímica, CSIC, Madrid, 28049, Spain
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11
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Nozik D, Tinga FMP, Bell AT. Propane Dehydrogenation and Cracking over Zn/H-MFI Prepared by Solid-State Ion Exchange of ZnCl 2. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03641] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Danna Nozik
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Francesca Mikaela P. Tinga
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
| | - Alexis T. Bell
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
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12
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Yamazaki H, Hasegawa H, Tanaka C, Takamiya Y, Mitsui T, Mizuno T. Al ion-exchanged USY in FCC catalyst for high LPG yield. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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13
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He J, Wu Z, Gu Q, Liu Y, Chu S, Chen S, Zhang Y, Yang B, Chen T, Wang A, Weckhuysen BM, Zhang T, Luo W. Zeolite-Tailored Active Site Proximity for the Efficient Production of Pentanoic Biofuels. Angew Chem Int Ed Engl 2021; 60:23713-23721. [PMID: 34409728 DOI: 10.1002/anie.202108170] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/16/2021] [Indexed: 11/07/2022]
Abstract
Biofuel production can alleviate reliance on fossil resources and thus carbon dioxide emission. Hydrodeoxygenation (HDO) refers collectively to a series of important biorefinery processes to produce biofuels. Here, well-dispersed and ultra-small Ru metal nanoclusters (ca. 1 nm), confined within the micropores of zeolite Y, provide the required active site intimacy, which significantly boosts the chemoselectivity towards the production of pentanoic biofuels in the direct, one-pot HDO of neat ethyl levulinate. Crucial for improving catalyst stability is the addition of La, which upholds the confined proximity by preventing zeolite lattice deconstruction during catalysis. We have established and extended an understanding of the "intimacy criterion" in catalytic biomass valorization. These findings bring new understanding of HDO reactions over confined proximity sites, leading to potential application for pentanoic biofuels in biomass conversion.
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Affiliation(s)
- Jiang He
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
- University of Chinese Academy of Science, 19A Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Zhijie Wu
- State Key Laboratory of Heavy Oil Processing and Key Laboratory of Catalysis of CNPC, China University of Petroleum, 18 Fuxue Road, ChangPing, Beijing, 102249, P. R. China
| | - Qingqing Gu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Yuanshuai Liu
- Inorganic Chemistry and Catalysis group, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Shengqi Chu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Shijingshan District, Beijing, 100049, P. R. China
| | - Shaohua Chen
- Key Laboratory of Advanced Energy Materials Chemistry, Institute of New Catalytic Materials Science, Nankai University, 38 Tongyang Road, Tianjin, 300350, P. R. China
| | - Yafeng Zhang
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Bing Yang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Tiehong Chen
- Key Laboratory of Advanced Energy Materials Chemistry, Institute of New Catalytic Materials Science, Nankai University, 38 Tongyang Road, Tianjin, 300350, P. R. China
| | - Aiqin Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Bert M Weckhuysen
- Inorganic Chemistry and Catalysis group, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Tao Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Wenhao Luo
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
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14
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He J, Wu Z, Gu Q, Liu Y, Chu S, Chen S, Zhang Y, Yang B, Chen T, Wang A, Weckhuysen BM, Zhang T, Luo W. Zeolite‐Tailored Active Site Proximity for the Efficient Production of Pentanoic Biofuels. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiang He
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
- University of Chinese Academy of Science 19A Yuquan Road, Shijingshan District Beijing 100049 P. R. China
| | - Zhijie Wu
- State Key Laboratory of Heavy Oil Processing and Key Laboratory of Catalysis of CNPC China University of Petroleum 18 Fuxue Road, ChangPing Beijing 102249 P. R. China
| | - Qingqing Gu
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
| | - Yuanshuai Liu
- Inorganic Chemistry and Catalysis group Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Shengqi Chu
- Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences 19B Yuquan Road, Shijingshan District Beijing 100049 P. R. China
| | - Shaohua Chen
- Key Laboratory of Advanced Energy Materials Chemistry Institute of New Catalytic Materials Science Nankai University 38 Tongyang Road Tianjin 300350 P. R. China
| | - Yafeng Zhang
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
| | - Bing Yang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
- Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
| | - Tiehong Chen
- Key Laboratory of Advanced Energy Materials Chemistry Institute of New Catalytic Materials Science Nankai University 38 Tongyang Road Tianjin 300350 P. R. China
| | - Aiqin Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis group Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Tao Zhang
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
| | - Wenhao Luo
- CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences 457 Zhongshan Road Dalian 116023 P. R. China
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15
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Resasco DE, Crossley SP, Wang B, White JL. Interaction of water with zeolites: a review. CATALYSIS REVIEWS 2021. [DOI: 10.1080/01614940.2021.1948301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Daniel E. Resasco
- University of Oklahoma, School of Chemical, Biological, and Materials Engineering, Norman, OK, USA
| | - Steven P. Crossley
- University of Oklahoma, School of Chemical, Biological, and Materials Engineering, Norman, OK, USA
| | - Bin Wang
- University of Oklahoma, School of Chemical, Biological, and Materials Engineering, Norman, OK, USA
| | - Jeffery L. White
- Oklahoma State University, School of Chemical Engineering, Stillwater, OK, USA
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16
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Zaitceva O, Louis B, Beneteau V, Pale P, Shanmugam S, Evstigneyev E, Vasiliev A. Post-modified FAU zeolites as efficient catalysts for the synthesis of coumarins. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Xu S, Jaegers NR, Hu W, Kwak JH, Bao X, Sun J, Wang Y, Hu JZ. High-Field One-Dimensional and Two-Dimensional 27Al Magic-Angle Spinning Nuclear Magnetic Resonance Study of θ-, δ-, and γ-Al 2O 3 Dominated Aluminum Oxides: Toward Understanding the Al Sites in γ-Al 2O 3. ACS OMEGA 2021; 6:4090-4099. [PMID: 33585784 PMCID: PMC7876829 DOI: 10.1021/acsomega.0c06163] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/14/2021] [Indexed: 05/25/2023]
Abstract
Herein, a detailed analysis was carried out using high-field (19.9 T) 27Al magic-angle spinning (MAS) nuclear magnetic resonance (NMR) on three specially prepared aluminum oxide samples where the γ-, δ-, and θ-Al2O3 phases are dominantly expressed through careful control of the synthesis conditions. Specifically, two-dimensional (2D) multiquantum (MQ) MAS 27Al was used to obtain high spectral resolution, which provided a guide for analyzing quantitative 1D 27Al NMR spectra. Six aluminum sites were resolved in the 2D MQ MAS NMR spectra, and seven aluminum sites were required to fit the 1D spectra. A set of octahedral and tetrahedral peaks with well-defined quadrupolar line shapes was observed in the θ-phase dominant sample and was unambiguously assigned to the θ-Al2O3 phase. The distinct line shapes related to the θ-Al2O3 phase provided an opportunity for effectively deconvoluting the more complex spectrum obtained from the δ-Al2O3 dominant sample, allowing the peaks/quadrupolar parameters related to the δ-Al2O3 phase to be extracted. The results show that the δ-Al2O3 phase contains three distinct AlO sites and three distinct AlT sites. This detailed Al site structural information offers a powerful way of analyzing the most complex γ-Al2O3 spectrum. It is found that the γ-Al2O3 phase consists of Al sites with local structures similar to those found in the δ-Al2O3 and θ-Al2O3 phases albeit with less ordering. Spin-lattice relaxation time measurement further confirms the disordering of the lattice. Collectively, this study uniquely assigns 27Al features in transition aluminas, offering a simplified method to quantify complex mixtures of aluminum sites in transition alumina samples.
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Affiliation(s)
- Suochang Xu
- Institute
for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Dalian
Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, P.R. China
| | - Nicholas R. Jaegers
- Institute
for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Gene
and Linda Voiland School of Chemical Engineering, Washington State University, Pullman, Washington 90015, United States
| | - Wenda Hu
- Institute
for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Gene
and Linda Voiland School of Chemical Engineering, Washington State University, Pullman, Washington 90015, United States
| | - Ja Hun Kwak
- Institute
for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Ulsan
National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Xinhe Bao
- Dalian
Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian 116023, P.R. China
| | - Junming Sun
- Gene
and Linda Voiland School of Chemical Engineering, Washington State University, Pullman, Washington 90015, United States
| | - Yong Wang
- Institute
for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Gene
and Linda Voiland School of Chemical Engineering, Washington State University, Pullman, Washington 90015, United States
| | - Jian Zhi Hu
- Institute
for Integrated Catalysis and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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18
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Velthoen MEZ, Lucini Paioni A, Teune IE, Baldus M, Weckhuysen BM. Matrix Effects in a Fluid Catalytic Cracking Catalyst Particle: Influence on Structure, Acidity, and Accessibility. Chemistry 2020; 26:11995-12009. [PMID: 32125038 PMCID: PMC7539955 DOI: 10.1002/chem.201905867] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Indexed: 01/07/2023]
Abstract
Matrix effects in a fluid catalytic cracking (FCC) catalyst have been studied in terms of structure, accessibility, and acidity. An extensive characterization study into the structural and acidic properties of a FCC catalyst, its individual components (i.e., zeolite H‐Y, binder (boehmite/silica) and kaolin clay), and two model FCC catalyst samples containing only two components (i.e., zeolite‐binder and binder‐clay) was performed at relevant conditions. This allowed the drawing of conclusions about the role of each individual component, describing their mutual physicochemical interactions, establishing structure‐acidity relationships, and determining matrix effects in FCC catalyst materials. This has been made possible by using a wide variety of characterization techniques, including temperature‐programmed desorption of ammonia, infrared spectroscopy in combination with CO as probe molecule, transmission electron microscopy, X‐ray diffraction, Ar physisorption, and advanced nuclear magnetic resonance. By doing so it was, for example, revealed that a freshly prepared spray‐dried FCC catalyst appears as a physical mixture of its individual components, but under typical riser reactor conditions, the interaction between zeolite H‐Y and binder material is significant and mobile aluminum migrates and inserts from the binder into the defects of the zeolite framework, thereby creating additional Brønsted acid sites and restoring the framework structure.
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Affiliation(s)
- Marjolein E Z Velthoen
- Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Alessandra Lucini Paioni
- Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Iris E Teune
- Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Marc Baldus
- Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH, Utrecht, The Netherlands
| | - Bert M Weckhuysen
- Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
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19
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Clatworthy EB, Konnov SV, Dubray F, Nesterenko N, Gilson J, Mintova S. Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions. Angew Chem Int Ed Engl 2020; 59:19414-19432. [DOI: 10.1002/anie.202005498] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Edwin B. Clatworthy
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | - Stanislav V. Konnov
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | - Florent Dubray
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | | | - Jean‐Pierre Gilson
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | - Svetlana Mintova
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
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20
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Clatworthy EB, Konnov SV, Dubray F, Nesterenko N, Gilson J, Mintova S. Emphasis on the Properties of Metal‐Containing Zeolites Operating Outside the Comfort Zone of Current Heterogeneous Catalytic Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005498] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Edwin B. Clatworthy
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | - Stanislav V. Konnov
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | - Florent Dubray
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | | | - Jean‐Pierre Gilson
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
| | - Svetlana Mintova
- Laboratoire Catalyse et Spectrochimie (LCS) Normandie Université ENSICAEN UNICAEN CNRS 6 Boulevard du Maréchal Juin 14050 Caen France
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21
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Chen K, Horstmeier S, Nguyen VT, Wang B, Crossley SP, Pham T, Gan Z, Hung I, White JL. Structure and Catalytic Characterization of a Second Framework Al(IV) Site in Zeolite Catalysts Revealed by NMR at 35.2 T. J Am Chem Soc 2020; 142:7514-7523. [PMID: 32233465 DOI: 10.1021/jacs.0c00590] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ultrahigh field 27Al{1H} 2D correlation NMR experiments demonstrate that at least two framework Al(IV) sites with hydroxyl groups can exist in acidic zeolite catalysts in their dehydrated and catalytically active states. In addition to the known Al(IV) at the framework bridging acid site (BAS), a new site created by a second tetrahedral Al atom and its hydroxyl group protons in zeolite HZSM-5 is clearly resolved at 35.2 T field strengths, enabled by recently developed series-connected hybrid (SCH) magnet technology. Coupled with computational modeling, extensive 27Al MQMAS experiments at multiple field strengths, and 1H MAS NMR experiments, these data indicate that this second tetrahedrally coordinated Al site (denoted Al(IV)-2) experiences an increased chemical shift and unique quadrupolar parameters relative to the BAS in both dehydrated and hydrated states. These new experimental data, supported by computational and catalytic reaction work, indicate that the second site arises from partially bonded framework (SiO)4-n-Al(OH)n species that significantly increase catalyst reactivity in benzene hydride-transfer and n-hexane cracking reactions. Al(IV)-2 sites result either from framework crystallization defects or from incomplete postsynthetic hydrolysis of a framework Al, prior to the formation of extraframework Al. Populations of this second acidic proton site created by the Al(IV)-2 species are shown to be controlled via postsynthetic catalyst treatments, should be general to different catalyst structures, and significantly enhance catalyst reactivity in the cited probe reactions when they are present. The results herein communicate the highest magnetic field strength data on active zeolite catalyst structures to date and enable for the first time the detection of Al and H association on a dry HZSM-5 catalyst, i.e., under conditions representative of typical end-use processes.
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Affiliation(s)
- Kuizhi Chen
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Sarah Horstmeier
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Vy T Nguyen
- School of Chemical, Materials, and Biological Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Bin Wang
- School of Chemical, Materials, and Biological Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Steven P Crossley
- School of Chemical, Materials, and Biological Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Tram Pham
- School of Chemical, Materials, and Biological Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Zhehong Gan
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Ivan Hung
- National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
| | - Jeffery L White
- School of Chemical Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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22
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Gambino M, Veselý M, Filez M, Oord R, Ferreira Sanchez D, Grolimund D, Nesterenko N, Minoux D, Maquet M, Meirer F, Weckhuysen BM. Nickel Poisoning of a Cracking Catalyst Unravelled by Single‐Particle X‐ray Fluorescence‐Diffraction‐Absorption Tomography. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914950] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marianna Gambino
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Martin Veselý
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Matthias Filez
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Ramon Oord
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | | | - Daniel Grolimund
- Swiss Light Source Paul Scherrer Institute 5232 Villigen Switzerland
| | - Nikolai Nesterenko
- Total Research and Technology Feluy Zone Industrielle Feluy C 7181 Seneffe Belgium
| | - Delphine Minoux
- Total Research and Technology Feluy Zone Industrielle Feluy C 7181 Seneffe Belgium
| | - Marianne Maquet
- Total Research and Technology Gonfreville Zone Industrielle Carrefour No 4, BP 27 76700 Harfleur France
| | - Florian Meirer
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
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23
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Gambino M, Veselý M, Filez M, Oord R, Ferreira Sanchez D, Grolimund D, Nesterenko N, Minoux D, Maquet M, Meirer F, Weckhuysen BM. Nickel Poisoning of a Cracking Catalyst Unravelled by Single-Particle X-ray Fluorescence-Diffraction-Absorption Tomography. Angew Chem Int Ed Engl 2020; 59:3922-3927. [PMID: 31889397 DOI: 10.1002/anie.201914950] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Indexed: 11/11/2022]
Abstract
Ni contamination from crude oil in the fluid catalytic cracking (FCC) process is one of the primary sources of catalyst deactivation, thereby promoting dehydrogenation-hydrogenation and speeding up coke growth. Herein, single-particle X-ray fluorescence, diffraction and absorption (μXRF-μXRD-μXAS) tomography is used in combination with confocal fluorescence microscopy (CFM) after thiophene staining to spatially resolve Ni interaction with catalyst components and study zeolite degradation, including the processes of dealumination and Brønsted acid sites distribution changes. The comparison between a Ni-lean particle, exposed to hydrotreated feedstock, and a Ni-rich one, exposed to non-hydrotreated feedstock, reveals a preferential interaction of Ni, found in co-localization with Fe, with the γ-Al2 O3 matrix, leading to the formation of spinel-type hotspots. Although both particles show similar surface zeolite degradation, the Ni-rich particle displays higher dealumination and a clear Brønsted acidity drop.
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Affiliation(s)
- Marianna Gambino
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, The Netherlands
| | - Martin Veselý
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, The Netherlands
| | - Matthias Filez
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, The Netherlands
| | - Ramon Oord
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, The Netherlands
| | | | - Daniel Grolimund
- Swiss Light Source, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Nikolai Nesterenko
- Total Research and Technology Feluy, Zone Industrielle Feluy C, 7181, Seneffe, Belgium
| | - Delphine Minoux
- Total Research and Technology Feluy, Zone Industrielle Feluy C, 7181, Seneffe, Belgium
| | - Marianne Maquet
- Total Research and Technology Gonfreville, Zone Industrielle Carrefour No 4, BP 27, 76700, Harfleur, France
| | - Florian Meirer
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, The Netherlands
| | - Bert M Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584, CG, Utrecht, The Netherlands
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24
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Gackowski M, Podobiński J, Broclawik E, Datka J. IR and NMR Studies of the Status of Al and Acid Sites in Desilicated Zeolite Y. Molecules 2019; 25:E31. [PMID: 31861869 PMCID: PMC6983114 DOI: 10.3390/molecules25010031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/11/2019] [Accepted: 12/18/2019] [Indexed: 11/16/2022] Open
Abstract
The desilication of zeolite Y (of Si/Al = 31) that was previously dealuminated by steaming and acid treatment was studied. Desilication of zeolites of high Si/Al module in alkali solutions extracts both Si and Al from zeolite crystals, but while Si remains in solution, Al is reinserted into the zeolite grain. The main goal of our study was to follow the status of Al reinserted into zeolite during the desilication procedure, and its role in the formation of acid sites of the Brønsted and Lewis types. The properties of Al were followed by 27Al MAS NMR spectroscopy (for parent samples and zeolites treated either with NaOH or NaOH/tetrabutylammonium hydroxide), whereas the acid sites generated in the final stages were studied by IR spectroscopy with NH3 and CO as probe molecules. In non-desilicated zeolite, most of the Al was in a typically zeolitic tetrahedral coordination, while both NMR and quantitative IR studies of NH3 sorption evidenced that Al that was extracted by desilication and was subsequently reinserted had a tetrahedral coordination similar to amorphous aluminosilicates and showed an ion exchange ability. After the exchange of Na+ to NH4+ and decomposition of NH4+ ions, reinserted Al forms generated protonic sites from which some condensed at higher temperatures producing Lewis acid sites (with stoichiometry typical for zeolites i.e., the condensation of two protonic sites produces one Lewis site) but some other kept their character.
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Affiliation(s)
| | | | - Ewa Broclawik
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland; (M.G.); (J.P.); (J.D.)
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25
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Cui Y, Wang Y, Mei D, Walter ED, Washton NM, Holladay JD, Wang Y, Szanyi J, Peden CH, Gao F. Revisiting effects of alkali metal and alkaline earth co-cation additives to Cu/SSZ-13 selective catalytic reduction catalysts. J Catal 2019. [DOI: 10.1016/j.jcat.2019.08.028] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Petrov AW, Ferri D, Kröcher O, van Bokhoven JA. Design of Stable Palladium-Based Zeolite Catalysts for Complete Methane Oxidation by Postsynthesis Zeolite Modification. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04486] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrey W. Petrov
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zurich, Institute for Chemical and Bioengineering, CH-8093 Zurich, Switzerland
| | - Davide Ferri
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Oliver Kröcher
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- Ecole polytechnique fédérale de Lausanne (EPFL), Institute of Chemical Sciences and Engineering, CH-1015 Lausanne, Switzerland
| | - Jeroen A. van Bokhoven
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zurich, Institute for Chemical and Bioengineering, CH-8093 Zurich, Switzerland
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27
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Zhao Z, Yu R, Shi C, Gies H, Xiao FS, De Vos D, Yokoi T, Bao X, Kolb U, McGuire R, Parvulescu AN, Maurer S, Müller U, Zhang W. Rare-earth ion exchanged Cu-SSZ-13 zeolite from organotemplate-free synthesis with enhanced hydrothermal stability in NH3-SCR of NOx. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02033g] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Rare-earth Y exchanged Al-rich Cu-CHA shows significantly improved hydrothermal stability in NH3-SCR reaction.
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28
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Conversion of chloromethane to propylene over fluoride-treated H-ZSM-35 zeolite catalysts. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2018.10.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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29
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Mosby B, Shah S, Braun PV. Salt Water-Triggered Ionic Cross-Linking of Polymer Composites by Controlled Release of Functional Ions. ACS OMEGA 2018; 3:16127-16133. [PMID: 31458249 PMCID: PMC6643778 DOI: 10.1021/acsomega.8b02786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 11/14/2018] [Indexed: 06/10/2023]
Abstract
A composite that undergoes ionic cross-linking in the presence of salt water is presented as a viable strategy for the development of chemically responsive materials. The permeation of salt water through the composite activates embedded inorganic fillers, resulting in the release of functional ions and subsequent cross-linking with the functional groups of the polymer matrix. The release of a cross-linking agent from the inorganic filler and composite is evaluated along with the impact of the cross-linking on composite properties. The new methodology is then coupled with a dopamine-functionalized polymer in order to evaluate the potential of this approach for environmentally triggered self-healing materials.
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30
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Schroeder C, Hansen MR, Koller H. Ultrastabilisierung von Zeolith Y wandelt Brønsted-Brønsted-Säurepaare in Brønsted-Lewis-Säurepaare um. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808395] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Christian Schroeder
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 28/30 48149 Münster Deutschland
| | - Michael Ryan Hansen
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 28/30 48149 Münster Deutschland
| | - Hubert Koller
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 28/30 48149 Münster Deutschland
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31
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Schroeder C, Hansen MR, Koller H. Ultrastabilization of Zeolite Y Transforms Brønsted-Brønsted Acid Pairs into Brønsted-Lewis Acid Pairs. Angew Chem Int Ed Engl 2018; 57:14281-14285. [DOI: 10.1002/anie.201808395] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Christian Schroeder
- Institute for Physical Chemistry; Westfälische Wilhelms-Universität Münster; Corrensstrasse 28/30 48149 Münster Germany
| | - Michael Ryan Hansen
- Institute for Physical Chemistry; Westfälische Wilhelms-Universität Münster; Corrensstrasse 28/30 48149 Münster Germany
| | - Hubert Koller
- Institute for Physical Chemistry; Westfälische Wilhelms-Universität Münster; Corrensstrasse 28/30 48149 Münster Germany
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32
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Ma Z, Ghosh A, Asthana N, van Bokhoven J. Visualization of Structural Changes During Deactivation and Regeneration of FAU Zeolite for Catalytic Fast Pyrolysis of Lignin Using NMR and Electron Microscopy Techniques. ChemCatChem 2018. [DOI: 10.1002/cctc.201800670] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhiqiang Ma
- HCI E 127 ICB, D-CHABETH Zürich Zurich 8093 Switzerland
- Current address: Department of Chemical EngineeringUniversity of Rochester Rochester NY 14627 USA
| | - Ashim Ghosh
- SABIC Technology CenterSugar Land TX 77478 USA
| | | | - Jeroen van Bokhoven
- HCI E 127 ICB, D-CHABETH Zürich Zurich 8093 Switzerland
- WLGA 135Laboratory for Catalysis and Sustainable ChemistryPaul Scherrer Institute (PSI) Villigen 5232 Switzerland
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33
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Rearrangement of Cyclopropylcarbinyl Chloride Over Protonic Zeolites: Formation of Carbocations and Behavior as Solid Solvents. Top Catal 2018. [DOI: 10.1007/s11244-018-0911-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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34
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Luo W, van Eck ERH, Bruijnincx PCA, Weckhuysen BM. Influence of Levulinic Acid Hydrogenation on Aluminum Coordination in Zeolite-Supported Ruthenium Catalysts: A 27 Al 3QMAS Nuclear Magnetic Resonance Study. Chemphyschem 2018; 19:379-385. [PMID: 29164764 PMCID: PMC5836955 DOI: 10.1002/cphc.201700785] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 09/30/2017] [Indexed: 11/23/2022]
Abstract
The influence of a highly oxygenated, polar protic reaction medium, that is, levulinic acid in 2-ethylhexanoic acid, on the dealumination of two zeolite-supported ruthenium catalysts, namely Ru/H-β and Ru/H-ZSM-5, has been investigated by 27 Al triple-quantum magic-angle spinning nuclear magnetic resonance spectroscopy (3QMAS NMR). Upon use of these catalysts in the hydrogenation of levulinic acid, the heterogeneity in aluminum speciation is found to increase for both Ru/H-ZSM-5 and Ru/H-β. For Ru/H-ZSM-5, the symmetric, tetrahedral framework aluminum species (FAL) were found to be mainly converted into distorted tetrahedral FAL species, with limited loss of aluminum to the solution by leaching. A severe loss of both FAL and extra-framework aluminum (EFAL) species into the liquid phase was observed for Ru/H-β instead. The large decrease in tetrahedral FAL species, in particular, results in a significant decrease in strong acid sites, as corroborated by Fourier transform infrared spectroscopy (FT-IR). This decrease in acidity, evidence of the inferior stability of the strongly acidic sites in Ru/H-β relative to Ru/H-ZSM-5 under the applied conditions, is considered as the main reason for differences seen in catalyst performance.
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Affiliation(s)
- Wenhao Luo
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584CGUtrechtThe Netherlands
- State Key Laboratory of CatalysisDalian Institute of Chemical Physics, Chinese Academy of SciencesZhongshan Road 457Dalian116023China
| | - Ernst R. H. van Eck
- Institute for Molecules and MaterialsRadboud UniversityHeyendaalsweg 1356525AJNijmegenThe Netherlands
| | - Pieter C. A. Bruijnincx
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584CGUtrechtThe Netherlands
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584CGUtrechtThe Netherlands
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35
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Liu J, Wang Z, Jian P, Jian R. Highly selective oxidation of styrene to benzaldehyde over a tailor-made cobalt oxide encapsulated zeolite catalyst. J Colloid Interface Sci 2018; 517:144-154. [PMID: 29421674 DOI: 10.1016/j.jcis.2018.01.113] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/25/2017] [Accepted: 01/31/2018] [Indexed: 11/20/2022]
Abstract
A tailor-made catalyst with cobalt oxide particles encapsulated into ZSM-5 zeolites (Co3O4@HZSM-5) was prepared via a hydrothermal method with the conventional impregnated Co3O4/SiO2 catalyst as the precursor and Si source. Various characterization results show that the Co3O4@HZSM-5 catalyst has well-organized structure with Co3O4 particles compatibly encapsulated in the zeolite crystals. The Co3O4@HZSM-5 catalyst was employed as an efficient catalyst for the selective oxidation of styrene to benzaldehyde with hydrogen peroxide as a green and economic oxidant. The effect of various reaction conditions including reaction time, reaction temperature, different kinds of solvents, styrene/H2O2 molar ratio and catalyst dosage on the catalytic performance were systematically investigated. Under the optimized reaction condition, the yield of benzaldehyde can achieve 78.9% with 96.8% styrene conversion and 81.5% benzaldehyde selectivity. Such an excellent catalytic performance can be attributed to the synergistic effect between the confined reaction environment and the proper acidic property. In addition, the reaction mechanism with Co3O4@HZSM-5 as the catalyst for the selective oxidation of styrene to benzaldehyde was reasonably proposed.
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Affiliation(s)
- Jiangyong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China.
| | - Zihao Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Panming Jian
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
| | - Ruiqi Jian
- School of Medicine, Stanford University, Stanford, CA 94304, USA
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36
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Chen Z, Gao F, Ren K, Wu Q, Luo Y, Zhou H, Zhang M, Xu Q. Mechanism of byproducts formation in the isobutane/butene alkylation on HY zeolites. RSC Adv 2018; 8:3392-3398. [PMID: 35542961 PMCID: PMC9077679 DOI: 10.1039/c7ra12629h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 12/14/2017] [Indexed: 11/23/2022] Open
Abstract
Submicron-size HY zeolites with a particles size of 200–700 nm were synthesized employing a crystal precipitation method in this study. The catalytic activity for the isobutane/butene alkylation was evaluated. The results indicated that butene conversion was above 90% and the selectivity of expected products (C8) was nearly at 90% within 72 h. The micropores-blocking and coverage of acid sites resulting from high hydrocarbons increased the difficulty for the diffusion of products to the bulk and inhibited the adsorption of reactant on activity sites, which caused deactivation of catalyst. The ultimate C12 content in alkylate oil, stemmed from trimerization of butene, was reduced via the addition reaction with butene to C16 and the cracking to C5–C7. The formation mechanisms and transformation processes of byproducts in alkylate oil revealed that the source of C9–C11 switched from cracking of C16+ to the addition of C5–C7 carbocations with butene when acid sites concentration was reduced by accumulating oligomers. Submicron-size HY zeolites with a particles size of 200–700 nm were synthesized employing a crystal precipitation method in this study.![]()
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Affiliation(s)
- Zhiwei Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing Beijing China 102249
| | - Feng Gao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing Beijing China 102249
| | - Kun Ren
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing Beijing China 102249
| | - Quangui Wu
- Dongying Keerte New Material Co., Ltd Dongying Shandong 257081 China
| | - Yan Luo
- Department of Chemical Engineering, West Virginia University Morgantown 26505 USA
| | - Hongjun Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing Beijing China 102249
| | - Meng Zhang
- Department of Mathematics, University of North Georgia-Oconee Watkinsville 30677 USA
| | - Quan Xu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing Beijing China 102249
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37
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Zhang L, Theng DS, Du Y, Xi S, Huang L, Gao F, Wang C, Chen L, Borgna A. Selective conversion of lactic acid to acrylic acid over alkali and alkaline-earth metal co-modified NaY zeolites. Catal Sci Technol 2017. [DOI: 10.1039/c7cy02142a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high AA selectivity of 84% was achieved through an environmentally friendly and sustainable catalytic process.
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Affiliation(s)
- Lili Zhang
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - De Sheng Theng
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Yonghua Du
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Lin Huang
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Feng Gao
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Chuan Wang
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Luwei Chen
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
| | - Armando Borgna
- Institute of Chemical and Engineering Sciences
- A*STAR
- Jurong Island 627833
- Singapore
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38
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Shen X, Kang J, Niu W, Wang M, Zhang Q, Wang Y. Impact of hierarchical pore structure on the catalytic performances of MFI zeolites modified by ZnO for the conversion of methanol to aromatics. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01041a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The increase in the pore hierarchy of ZnO/hierarchical H-ZSM-5 catalysts increased the catalyst stability and the yield of aromatics, particularly BTX, from methanol.
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Affiliation(s)
- Xinquan Shen
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- National Engineering Laboratory for Green Chemical Productions of Alcohols
- Ethers and Esters
- College of Chemistry and Chemical Engineering
| | - Jincan Kang
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- National Engineering Laboratory for Green Chemical Productions of Alcohols
- Ethers and Esters
- College of Chemistry and Chemical Engineering
| | - Wei Niu
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- National Engineering Laboratory for Green Chemical Productions of Alcohols
- Ethers and Esters
- College of Chemistry and Chemical Engineering
| | - Mengheng Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- National Engineering Laboratory for Green Chemical Productions of Alcohols
- Ethers and Esters
- College of Chemistry and Chemical Engineering
| | - Qinghong Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- National Engineering Laboratory for Green Chemical Productions of Alcohols
- Ethers and Esters
- College of Chemistry and Chemical Engineering
| | - Ye Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Collaborative Innovation Center of Chemistry for Energy Materials
- National Engineering Laboratory for Green Chemical Productions of Alcohols
- Ethers and Esters
- College of Chemistry and Chemical Engineering
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39
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Albarracin-Caballero JD, Khurana I, Di Iorio JR, Shih AJ, Schmidt JE, Dusselier M, Davis ME, Yezerets A, Miller JT, Ribeiro FH, Gounder R. Structural and kinetic changes to small-pore Cu-zeolites after hydrothermal aging treatments and selective catalytic reduction of NOx with ammonia. REACT CHEM ENG 2017. [DOI: 10.1039/c6re00198j] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu in aged zeolites changes structure during SCR.
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Affiliation(s)
| | - Ishant Khurana
- Charles D. Davidson School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
| | - John R. Di Iorio
- Charles D. Davidson School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
| | - Arthur J. Shih
- Charles D. Davidson School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
| | - Joel E. Schmidt
- Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | - Michiel Dusselier
- Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
- Center for Surface Chemistry and Catalysis
| | - Mark E. Davis
- Chemical Engineering
- California Institute of Technology
- Pasadena
- USA
| | | | - Jeffrey T. Miller
- Charles D. Davidson School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
| | - Fabio H. Ribeiro
- Charles D. Davidson School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering
- Purdue University
- West Lafayette
- USA
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40
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Etim UJ, Xu B, Ullah R, Yan Z. Effect of vanadium contamination on the framework and micropore structure of ultra stable Y-zeolite. J Colloid Interface Sci 2016; 463:188-98. [PMID: 26520826 DOI: 10.1016/j.jcis.2015.10.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 10/03/2015] [Accepted: 10/20/2015] [Indexed: 10/22/2022]
Abstract
Y-zeolites are the main component of fluid catalytic cracking (FCC) catalyst for conversion of crude petroleum to products of high demand including transportation fuel. We investigated effects of vanadium which is present as one of the impurities in FCC feedstock on the framework and micropore structure of ultra-stable (US) Y-zeolite. The zeolite samples were prepared and characterized using standard techniques including: (1) X-ray diffraction, (2) N2 adsorption employing non local density functional theory method, NLDFT, (3) Transmittance and Pyridine FTIR, (4) Transmittance electron microscopy (TEM), and (5) (27)Al and (29)Si MAS-NMR. Results revealed that in the presence of steam, vanadium caused excessive evolution of non inter-crystalline mesopores and structural damage. The evolved mesopore size averaged about 25.0nm at 0.5wt.% vanadium loading, far larger than mesopore size in zeolitic materials with improved hydrothermal stability and performance for FCC catalyst. A mechanism of mesopore formation based on accelerated dealumination has been proposed and discussed. Vanadium immobilization experiments conducted to mitigate vanadium migration into the framework clearly showed vanadium is mobile at reaction conditions. From the results, interaction of vanadium with the passivator limits and decreases mobility and activity of vanadium into inner cavities of the zeolite capable of causing huge structure breakdown and acid sites destruction. This study therefore deepens insight into the causes of alteration in activity and selectivity of vanadium contaminated catalyst and hints on a possible mechanism of passivation in vanadium passivated FCC catalyst.
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Affiliation(s)
- U J Etim
- State Key Laboratory of Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China
| | - B Xu
- State Key Laboratory of Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China
| | - Rooh Ullah
- State Key Laboratory of Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China
| | - Z Yan
- State Key Laboratory of Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China.
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41
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Prodinger S, Vemuri RS, Varga T, Peter McGrail B, Motkuri RK, Derewinski MA. Impact of chabazite SSZ-13 textural properties and chemical composition on CO2 adsorption applications. NEW J CHEM 2016. [DOI: 10.1039/c5nj03205a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A narrow pore zeolite was synthesized with different Si/Al ratios and micro- to nanoparticle size where both played an important role in CO2 adsorption.
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Affiliation(s)
- Sebastian Prodinger
- Institute of Integrated Catalysis
- Physical Sciences Division
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
| | - Rama S. Vemuri
- Hydrocarbon Processing Group
- Energy and Environment Directorate
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
| | - Tamas Varga
- Environmental Molecular Sciences Laboratory
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
| | - B. Peter McGrail
- Hydrocarbon Processing Group
- Energy and Environment Directorate
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
| | - Radha Kishan Motkuri
- Hydrocarbon Processing Group
- Energy and Environment Directorate
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
| | - Miroslaw A. Derewinski
- Institute of Integrated Catalysis
- Physical Sciences Division
- Pacific Northwest National Laboratory (PNNL)
- Richland
- USA
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42
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Vogt ETC, Weckhuysen BM. Fluid catalytic cracking: recent developments on the grand old lady of zeolite catalysis. Chem Soc Rev 2015; 44:7342-70. [PMID: 26382875 PMCID: PMC4594121 DOI: 10.1039/c5cs00376h] [Citation(s) in RCA: 333] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Fluid catalytic cracking (FCC) is one of the major conversion technologies in the oil refinery industry, and the largest commercial catalytic process that uses zeolite materials.
Fluid catalytic cracking (FCC) is one of the major conversion technologies in the oil refinery industry. FCC currently produces the majority of the world's gasoline, as well as an important fraction of propylene for the polymer industry. In this critical review, we give an overview of the latest trends in this field of research. These trends include ways to make it possible to process either very heavy or very light crude oil fractions as well as to co-process biomass-based oxygenates with regular crude oil fractions, and convert these more complex feedstocks in an increasing amount of propylene and diesel-range fuels. After providing some general background of the FCC process, including a short history as well as details on the process, reactor design, chemical reactions involved and catalyst material, we will discuss several trends in FCC catalysis research by focusing on ways to improve the zeolite structure stability, propylene selectivity and the overall catalyst accessibility by (a) the addition of rare earth elements and phosphorus, (b) constructing hierarchical pores systems and (c) the introduction of new zeolite structures. In addition, we present an overview of the state-of-the-art micro-spectroscopy methods for characterizing FCC catalysts at the single particle level. These new characterization tools are able to explain the influence of the harsh FCC processing conditions (e.g. steam) and the presence of various metal poisons (e.g. V, Fe and Ni) in the crude oil feedstocks on the 3-D structure and accessibility of FCC catalyst materials.
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Affiliation(s)
- E T C Vogt
- Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
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43
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Li J, Zeng P, Zhao L, Ren S, Guo Q, Zhao H, Wang B, Liu H, Pang X, Gao X, Shen B. Tuning of acidity in CeY catalytic cracking catalysts by controlling the migration of Ce in the ion exchange step through valence changes. J Catal 2015. [DOI: 10.1016/j.jcat.2015.06.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Chen NY, Liu MC, Yang SC, Sheu HS, Chang JR. Impacts of Binder-Zeolite Interactions on the Structure and Surface Properties of NaY–SiO2 Extrudates. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01369] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nan-Yu Chen
- Department
of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Ming-Chun Liu
- Department
of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Shih-Chieh Yang
- Department
of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan
| | - Hwo-Shuen Sheu
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - Jen-Ray Chang
- Department
of Chemical Engineering, National Chung Cheng University, Chia-Yi, Taiwan
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45
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Qiao K, Wei L, Feng R, Yan Z, Zhang Z, Gao X. Preparation and characterization of hierarchical USY by post-treatment. APPLIED PETROCHEMICAL RESEARCH 2015. [DOI: 10.1007/s13203-015-0122-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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46
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Di Iorio JR, Bates SA, Verma AA, Delgass WN, Ribeiro FH, Miller JT, Gounder R. The Dynamic Nature of Brønsted Acid Sites in Cu–Zeolites During NOx Selective Catalytic Reduction: Quantification by Gas-Phase Ammonia Titration. Top Catal 2015. [DOI: 10.1007/s11244-015-0387-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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47
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HOSSEINI M, ZANJANCHI MA, GHALAMI-CHOOBAR B, GOLMOJDEH H. Ultrasound-assisted dealumination of zeolite Y. J CHEM SCI 2015. [DOI: 10.1007/s12039-014-0745-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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49
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Li X, Narayanan S, Michaelis VK, Ong TC, Keeler EG, Kim H, McKay IS, Griffin RG, Wang EN. Zeolite Y Adsorbents with High Vapor Uptake Capacity and Robust Cycling Stability for Potential Applications in Advanced Adsorption Heat Pumps. MICROPOROUS AND MESOPOROUS MATERIALS : THE OFFICIAL JOURNAL OF THE INTERNATIONAL ZEOLITE ASSOCIATION 2015; 201:151-159. [PMID: 25395877 PMCID: PMC4226535 DOI: 10.1016/j.micromeso.2014.09.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Modular and compact adsorption heat pumps (AHPs) promise an energy-efficient alternative to conventional vapor compression based heating, ventilation and air conditioning systems. A key element in the advancement of AHPs is the development of adsorbents with high uptake capacity, fast intracrystalline diffusivity and durable hydrothermal stability. Herein, the ion exchange of NaY zeolites with ingoing Mg2+ ions is systematically studied to maximize the ion exchange degree (IED) for improved sorption performance. It is found that beyond an ion exchange threshold of 64.1%, deeper ion exchange does not benefit water uptake capacity or characteristic adsorption energy, but does enhance the vapor diffusivity. In addition to using water as an adsorbate, the uptake properties of Mg,Na-Y zeolites were investigated using 20 wt.% MeOH aqueous solution as a novel anti-freeze adsorbate, revealing that the MeOH additive has an insignificant influence on the overall sorption performance. We also demonstrated that the labscale synthetic scalability is robust, and that the tailored zeolites scarcely suffer from hydrothermal stability even after successive 108-fold adsorption/desorption cycles. The samples were analyzed using N2 sorption, 27Al/29Si MAS NMR spectroscopy, ICP-AES, dynamic vapor sorption, SEM, Fick's 2nd law and D-R equation regressions. Among these, close examination of sorption isotherms for H2O and N2 adsorbates allows us to decouple and extract some insightful information underlying the complex water uptake phenomena. This work shows the promising performance of our modified zeolites that can be integrated into various AHP designs for buildings, electronics, and transportation applications.
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Affiliation(s)
- Xiansen Li
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Shankar Narayanan
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Vladimir K. Michaelis
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Ta-Chung Ong
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Eric G. Keeler
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Hyunho Kim
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Ian S. McKay
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Robert G. Griffin
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
| | - Evelyn N. Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
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50
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Ennaert T, Geboers J, Gobechiya E, Courtin CM, Kurttepeli M, Houthoofd K, Kirschhock CE, Magusin PC, Bals S, Jacobs PA, Sels BF. Conceptual Frame Rationalizing the Self-Stabilization of H-USY Zeolites in Hot Liquid Water. ACS Catal 2014. [DOI: 10.1021/cs501559s] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Thijs Ennaert
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Jan Geboers
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Elena Gobechiya
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Christophe M. Courtin
- Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Center (LFoRCe), KU Leuven, Kasteelpark Arenberg 20, 3001 Heverlee, Belgium
| | - Mert Kurttepeli
- Electron
Microscopy for Materials Science (EMAT), Universiteit Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Kristof Houthoofd
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Christine E.A. Kirschhock
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Pieter C.M.M. Magusin
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Sara Bals
- Electron
Microscopy for Materials Science (EMAT), Universiteit Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen, Belgium
| | - Pierre A. Jacobs
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
| | - Bert F. Sels
- Center
for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg
23, 3001 Heverlee, Belgium
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