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The Electrophilicity of Surface Carbon Species in the Redox Reactions of CuO-CeO2 Catalysts.
Kang, Liqun; Wang, Bolun; Güntner, Andreas T; Xu, Siyuan; Wan, Xuhao; Liu, Yiyun; Marlow, Sushila; Ren, Yifei; Gianolio, Diego; Tang, Chiu C; Murzin, Vadim; Asakura, Hiroyuki; He, Qian; Guan, Shaoliang; Velasco-Vélez, Juan J; Pratsinis, Sotiris E; Guo, Yuzheng; Wang, Feng Ryan.
Affiliation
  • Kang L; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Wang B; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Güntner AT; Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zürich, 8092, Zürich, Switzerland.
  • Xu S; School of Electrical Engineering and Automation, Wuhan University, Wuhan, China.
  • Wan X; School of Electrical Engineering and Automation, Wuhan University, Wuhan, China.
  • Liu Y; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Marlow S; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Ren Y; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
  • Gianolio D; Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK.
  • Tang CC; Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK.
  • Murzin V; Deutsches Elektronen Synchrotron DESY, 22607, Hamburg, Germany.
  • Asakura H; Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 6158510, Japan.
  • He Q; Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore.
  • Guan S; HarwellXPS-The EPSRC National Facility for Photoelectron Spectroscopy, Research Complex at Harwell (RCaH), Didcot, OX11 0FA, UK.
  • Velasco-Vélez JJ; Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany.
  • Pratsinis SE; Particle Technology Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH Zürich, 8092, Zürich, Switzerland.
  • Guo Y; School of Electrical Engineering and Automation, Wuhan University, Wuhan, China.
  • Wang FR; Department of Chemical Engineering, University College London, London, WC1E 7JE, UK.
Angew Chem Int Ed Engl ; 60(26): 14420-14428, 2021 Jun 21.
Article in En | MEDLINE | ID: mdl-33729669
Electronic metal-support interactions (EMSI) describe the electron flow between metal sites and a metal oxide support. It is generally used to follow the mechanism of redox reactions. In this study of CuO-CeO2 redox, an additional flow of electrons from metallic Cu to surface carbon species is observed via a combination of operando X-ray absorption spectroscopy, synchrotron X-ray powder diffraction, near ambient pressure near edge X-ray absorption fine structure spectroscopy, and diffuse reflectance infrared Fourier transform spectroscopy. An electronic metal-support-carbon interaction (EMSCI) is proposed to explain the reaction pathway of CO oxidation. The EMSCI provides a complete picture of the mass and electron flow, which will help predict and improve the catalytic performance in the selective activation of CO2 , carbonate, or carbonyl species in C1 chemistry.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Angew Chem Int Ed Engl Year: 2021 Document type: Article Country of publication: Germany
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Angew Chem Int Ed Engl Year: 2021 Document type: Article Country of publication: Germany