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The C-H Bond Activation Triggered by Subsurface Mo Dopant on MgO Catalyst in Oxidative Coupling of Methane. Catalysts 2022. [DOI: 10.3390/catal12101083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this work, density functional theory calculations are performed to explore the unique role of Mo dopant on MgO in oxidative coupling of methane. It is revealed that subsurface Mo dopant significantly enhanced the adsorption and activation of oxygen molecules. The combination of adsorbed oxygen and surface Mg exhibited a balanced activity for C-H bond activation and release of methyl radical which paves the way to activate methane with a promising yield.
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Du JH, Qian K, Wang Y, Huang W, Peng L. 7Li NMR investigations of Li/MgO catalysts for oxidative coupling of methane. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Qian K, You R, Guan Y, Wen W, Tian Y, Pan Y, Huang W. Single-Site Catalysis of Li-MgO Catalysts for Oxidative Coupling of Methane Reaction. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03896] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kun Qian
- Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Rui You
- Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Yong Guan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Wu Wen
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Yangchao Tian
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Weixin Huang
- Hefei National Laboratory for Physical Sciences at Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
- Dalian National Laboratory for Clean Energy, Dalian 116023, China
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Niedermaier M, Schwab T, Kube P, Zickler GA, Trunschke A, Diwald O. Catalytic activity, water formation, and sintering: Methane activation over Co- and Fe-doped MgO nanocrystals. J Chem Phys 2020; 152:074713. [PMID: 32087664 DOI: 10.1063/1.5138894] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Microstructure, structure, and compositional homogeneity of metal oxide nanoparticles can change dramatically during catalysis. Considering the different stabilities of cobalt and iron ions in the MgO host lattice [M. Niedermaier et al., J. Phys. Chem. C 123, 25991 (2019)], we employed MgO nanocube powders with or without transition metal admixtures for the oxidative coupling of methane (OCM) reaction to analyze characteristic differences in catalytic activity and sintering behavior. Undoped MgO nanocrystals exhibit the highest C2 selectivity and retain the nanocrystallinity of the starting material after 24 h time on stream. For the Co-Mg-O nanoparticle powder, which exhibits the highest activity and COx selectivity and where OCM-induced coarsening is strongest, we found that the Co2+ ions remain homogeneously distributed over the MgO lattice. Trivalent Fe ions migrate to the surface of Fe-Mg-O nanoparticles where they form a magnesioferrite phase (MgFe2O4) with a characteristic impact on catalytic performance: Fe-Mg-O is initially less selective than MgO despite its lower activity. An increase in C2 selectivity and a decrease in the CO2/CO ratio with time on stream are attributed to the increasing fraction of coarsened particles that become depleted in redox active Fe. Surface water is a by-product of the OCM reaction, favors mass transport across the particle surfaces, and serves as a sintering aid during catalysis. The characteristic changes in size and morphology of MgO, Co-doped, and Fe-doped MgO particles can be consistently explained by activity and C2 selectivity trends. The original morphology of the nanocubes as a starting material for the OCM reaction does not impact the catalytic activity.
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Affiliation(s)
- Matthias Niedermaier
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
| | - Thomas Schwab
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
| | - Pierre Kube
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany
| | - Gregor A Zickler
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
| | - Annette Trunschke
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany
| | - Oliver Diwald
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
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Kwak JS, Oh KR, Kim KY, Lee JM, Kwon YU. CO2 absorption and desorption characteristics of MgO-based absorbent promoted by triple eutectic alkali carbonate. Phys Chem Chem Phys 2019; 21:20805-20813. [DOI: 10.1039/c9cp03258d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the details of the mechanism of CO2 absorption and desorption of MgO absorbent promoted by triple eutectic alkali carbonate.
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Affiliation(s)
- Jin-Su Kwak
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Kyung-Ryul Oh
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Kang-Yeong Kim
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Jeong-Min Lee
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
| | - Young-Uk Kwon
- Department of Chemistry
- Sungkyunkwan University
- Suwon 16419
- Korea
- School of Material Science Engineering
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Arndt S, Simon U, Kiefer K, Otremba T, Siemensmeyer K, Wollgarten M, Berthold A, Schmidt F, Görke O, Schomäcker R, Dinse KP. Li/MgO Catalysts Doped with Alio-valent Ions. Part I: Structure, Composition, and Catalytic Properties. ChemCatChem 2017. [DOI: 10.1002/cctc.201700611] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sebastian Arndt
- Technische Universität Berlin; Institut für Chemie; Straße des 17. Juni 124 10623 Berlin Germany
| | - Ulla Simon
- Technische Universität Berlin; Institut für Werkstoffwissenschaften und -technologien, Fachgebiet Keramische Werkstoffe; Hardenbergstraße 40 10623 Berlin Germany
| | - Klaus Kiefer
- Helmholtz-Zentrum Berlin für Materialien und Energie; Lise Meitner Campus; Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Torsten Otremba
- BasCat-UniCat BASF JointLab, Eugene Paul Wigner Building; Hardenbergstraße 36 10623 Berlin Germany
| | - Konrad Siemensmeyer
- Helmholtz-Zentrum Berlin für Materialien und Energie; Lise Meitner Campus; Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Markus Wollgarten
- Helmholtz-Zentrum Berlin für Materialien und Energie; Lise Meitner Campus; Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Almuth Berthold
- Technische Universität Berlin; Institut für Werkstoffwissenschaften und -technologien, Fachgebiet Keramische Werkstoffe; Hardenbergstraße 40 10623 Berlin Germany
| | - Franziska Schmidt
- Technische Universität Berlin; Institut für Werkstoffwissenschaften und -technologien, Fachgebiet Keramische Werkstoffe; Hardenbergstraße 40 10623 Berlin Germany
| | - Oliver Görke
- Technische Universität Berlin; Institut für Werkstoffwissenschaften und -technologien, Fachgebiet Keramische Werkstoffe; Hardenbergstraße 40 10623 Berlin Germany
| | - Reinhard Schomäcker
- Technische Universität Berlin; Institut für Chemie; Straße des 17. Juni 124 10623 Berlin Germany
| | - Klaus-Peter Dinse
- Freie Universität Berlin, Fachbereich Physik; Arnimallee 14 14195 Berlin Germany), Fax: (+49) 308-385-6139
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Luo L, Jin Y, Pan H, Zheng X, Wu L, You R, Huang W. Distribution and role of Li in Li-doped MgO catalysts for oxidative coupling of methane. J Catal 2017. [DOI: 10.1016/j.jcat.2016.11.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Olivos-Suarez AI, Szécsényi À, Hensen EJM, Ruiz-Martinez J, Pidko EA, Gascon J. Strategies for the Direct Catalytic Valorization of Methane Using Heterogeneous Catalysis: Challenges and Opportunities. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00428] [Citation(s) in RCA: 336] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alma I. Olivos-Suarez
- Catalysis
Engineering, Chemical Engineering Department Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
| | - Àgnes Szécsényi
- Catalysis
Engineering, Chemical Engineering Department Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
- Inorganic
Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Inorganic
Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Javier Ruiz-Martinez
- AkzoNobel - Supply Chain, Research & Development, Process Technology SRG, 7418 AJ Deventer, The Netherlands
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Evgeny A. Pidko
- Inorganic
Materials Chemistry group, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Institute
for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jorge Gascon
- Catalysis
Engineering, Chemical Engineering Department Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands
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9
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Structure sensitivity of the oxidative activation of methane over MgO model catalysts: II. Nature of active sites and reaction mechanism. J Catal 2015. [DOI: 10.1016/j.jcat.2015.05.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Li J, Wu XN, Zhou S, Tang S, Schlangen M, Schwarz H. Deutlich unterschiedliche Mechanismen der Wasserstoffatomabstraktion aus Methan und Wasser durch den heteronuklearen Oxidcluster [Ga2MgO4].+. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503763] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Li J, Wu XN, Zhou S, Tang S, Schlangen M, Schwarz H. Distinct Mechanistic Differences in the Hydrogen-Atom Transfer from Methane and Water by the Heteronuclear Oxide Cluster [Ga2MgO4].+. Angew Chem Int Ed Engl 2015; 54:12298-302. [DOI: 10.1002/anie.201503763] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Indexed: 12/23/2022]
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Su DS, Zhang B, Schlögl R. Electron microscopy of solid catalysts--transforming from a challenge to a toolbox. Chem Rev 2015; 115:2818-82. [PMID: 25826447 DOI: 10.1021/cr500084c] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Dang Sheng Su
- †Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.,‡Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Bingsen Zhang
- †Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Robert Schlögl
- ‡Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
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14
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Abstract
A heterogeneous catalyst is a functional material that continually creates active sites with its reactants under reaction conditions. These sites change the rates of chemical reactions of the reactants localized on them without changing the thermodynamic equilibrium between the materials.
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Affiliation(s)
- Robert Schlögl
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin (Germany) http://www.fhi-berlin.mpg.de http://www.cec.mpg.de; Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36, 45470 Mülheim a.d. Ruhr (Germany).
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Kwapien K, Paier J, Sauer J, Geske M, Zavyalova U, Horn R, Schwach P, Trunschke A, Schlögl R. Zentren der Methanaktivierung auf Oberflächen von Lithium-dotiertem MgO. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310632] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Kwapien K, Paier J, Sauer J, Geske M, Zavyalova U, Horn R, Schwach P, Trunschke A, Schlögl R. Sites for Methane Activation on Lithium-Doped Magnesium Oxide Surfaces. Angew Chem Int Ed Engl 2014; 53:8774-8. [DOI: 10.1002/anie.201310632] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 02/19/2014] [Indexed: 11/08/2022]
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Schwach P, Willinger MG, Trunschke A, Schlögl R. Methane Coupling over Magnesium Oxide: How Doping Can Work. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305470] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Schwach P, Willinger MG, Trunschke A, Schlögl R. Methane Coupling over Magnesium Oxide: How Doping Can Work. Angew Chem Int Ed Engl 2013; 52:11381-4. [DOI: 10.1002/anie.201305470] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Indexed: 11/08/2022]
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