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Peters S, Kunkel B, Cakir CT, Kabelitz A, Witte S, Bernstein T, Bartling S, Radtke M, Emmerling F, Abdel-Mageed AM, Wohlrab S, Guilherme Buzanich A. Time-, space- and energy-resolved in situ characterization of catalysts by X-ray absorption spectroscopy. Chem Commun (Camb) 2023; 59:12120-12123. [PMID: 37743795 DOI: 10.1039/d3cc03277a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
A setup for dispersive X-ray absorption spectroscopy (XAS) with spatial, temporal and energy resolution is presented. Through investigation of a Mo/HZSM-5 catalyst during the dehydroaromatization of methane we observed a reduction gradient along the packed bed. Our new method represents an unprecedented addition to the analytical toolbox for in situ characterizations.
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Affiliation(s)
- Stefan Peters
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29a, Rostock 18059, Germany.
| | - Benny Kunkel
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29a, Rostock 18059, Germany.
| | - Cafer Tufan Cakir
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
| | - Anke Kabelitz
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
| | - Steffen Witte
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
| | - Thomas Bernstein
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
| | - Stephan Bartling
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29a, Rostock 18059, Germany.
| | - Martin Radtke
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
| | - Franziska Emmerling
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
| | - Ali Mohamed Abdel-Mageed
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29a, Rostock 18059, Germany.
| | - Sebastian Wohlrab
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29a, Rostock 18059, Germany.
| | - Ana Guilherme Buzanich
- Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Str. 11, Berlin 12489, Germany.
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Liutkova A, Zhang H, Simons JFM, Mezari B, Mirolo M, Garcia GA, Hensen EJM, Kosinov N. Ca Cations Impact the Local Environment inside HZSM-5 Pores during the Methanol-to-Hydrocarbons Reaction. ACS Catal 2023; 13:3471-3484. [PMID: 36970466 PMCID: PMC10028611 DOI: 10.1021/acscatal.3c00059] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/10/2023] [Indexed: 02/25/2023]
Abstract
The methanol-to-hydrocarbons (MTH) process is an industrially relevant method to produce valuable light olefins such as propylene. One of the ways to enhance propylene selectivity is to modify zeolite catalysts with alkaline earth cations. The underlying mechanistic aspects of this type of promotion are not well understood. Here, we study the interaction of Ca2+ with reaction intermediates and products formed during the MTH reaction. Using transient kinetic and spectroscopic tools, we find strong indications that the selectivity differences between Ca/ZSM-5 and HZSM-5 are related to the different local environment inside the pores due to the presence of Ca2+. In particular, Ca/ZSM-5 strongly retains water, hydrocarbons, and oxygenates, which occupy as much as 10% of the micropores during the ongoing MTH reaction. This change in the effective pore geometry affects the formation of hydrocarbon pool components and in this way directs the MTH reaction toward the olefin cycle.
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Affiliation(s)
- Anna Liutkova
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Hao Zhang
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jérôme F. M. Simons
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Brahim Mezari
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Marta Mirolo
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043 Grenoble, Cedex 9, France
| | - Gustavo A. Garcia
- Synchrotron SOLEIL, L’Orme des Merisiers, St Aubin, B.P. 48, 91192 Gif sur Yvette, France
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Nikolay Kosinov
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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Liu Y, Ćoza M, Drozhzhin V, van den Bosch Y, Meng L, van de Poll R, Hensen EJM, Kosinov N. Transition-Metal Catalysts for Methane Dehydroaromatization (Mo, Re, Fe): Activity, Stability, Active Sites, and Carbon Deposits. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yujie Liu
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Marita Ćoza
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Victor Drozhzhin
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Yannis van den Bosch
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Lingqian Meng
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Rim van de Poll
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
| | - Nikolay Kosinov
- Laboratory of Inorganic Materials & Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MBEindhoven, The Netherlands
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Cruchade H, Medeiros-Costa IC, Nesterenko N, Gilson JP, Pinard L, Beuque A, Mintova S. Catalytic Routes for Direct Methane Conversion to Hydrocarbons and Hydrogen: Current State and Opportunities. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Hugo Cruchade
- Normandie Université, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie (LCS), 14050Caen, France
| | | | | | - Jean-Pierre Gilson
- Normandie Université, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie (LCS), 14050Caen, France
| | - Ludovic Pinard
- Normandie Université, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie (LCS), 14050Caen, France
| | - Antoine Beuque
- Institut de Chimie des Milieux et Matériaux de Poitiers (ICM2P), UMR 7285 CNRS, 86073Poitiers, France
| | - Svetlana Mintova
- Normandie Université, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie (LCS), 14050Caen, France
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Hu J, Li Y, Wu S, Wang X, Xia C, Zhao X, Liu J. MoO 3 Nanobelt-Modified HMCM-49 Zeolite with Enhanced Dispersion of Mo Species and Catalytic Performance for Methane Dehydro-Aromatization. Molecules 2022; 27:molecules27144404. [PMID: 35889276 PMCID: PMC9320376 DOI: 10.3390/molecules27144404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/07/2022] [Accepted: 07/07/2022] [Indexed: 01/27/2023] Open
Abstract
The methane dehydro-aromatization reaction (MDA) is a promising methane valorization process due to the conversion of methane to value-added aromatics (benzene, toluene and naphthalene). However, one of the major disadvantages of utilizing zeolite in MDA is that the catalyst is rapidly inactivated due to coke formation, which eventually causes the activity and aromatic selectivity to decrease. Consequently, the process is not conducive to large-scale industrial applications. The reasonable control of Mo site distribution on the zeolite surface is the key factor for partially inhibiting the coking of the catalyst and improving stability. Here, MoO3 nanobelts can be used for alternative Mo precursors to prepare MDA catalysts. Catalysts modified with MoO3 nanobelts present higher activity (13.4%) and benzene yield (9.2%) than those catalysts loaded with commercial MoO3.
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Affiliation(s)
- Jing Hu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China; (Y.L.); (X.W.); (C.X.); (X.Z.)
- Correspondence: (J.H.); (J.L.)
| | - Yangyang Li
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China; (Y.L.); (X.W.); (C.X.); (X.Z.)
| | - Shujie Wu
- Institute of Physical Chemistry, College of Chemistry, Jilin University, Changchun 130023, China;
| | - Xiaohui Wang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China; (Y.L.); (X.W.); (C.X.); (X.Z.)
| | - Cai Xia
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China; (Y.L.); (X.W.); (C.X.); (X.Z.)
| | - Xinyu Zhao
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China; (Y.L.); (X.W.); (C.X.); (X.Z.)
| | - Jinglin Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, China; (Y.L.); (X.W.); (C.X.); (X.Z.)
- Correspondence: (J.H.); (J.L.)
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