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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 ORCID:, Guan, Shaoliang, Velasco-Vélez, Juan J., Pratsinis, Sotiris E., Guo, Yuzheng and Wang, Feng Ryan 2021. The electrophilicity of surface carbon species in the redox reactions of CuO-CeO2 catalysts. Angewandte Chemie International Edition 60 (26) 10.1002/anie.202102570

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Additional Information: This is an open access article under the terms of the Creative Commons Attribution License
Publisher: Wiley
ISSN: 1433-7851
Date of First Compliant Deposit: 21 May 2021
Date of Acceptance: 17 March 2021
Last Modified: 25 May 2023 16:31

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