Kang, L; Wang, B; Güntner, AT; Xu, S; Wan, X; Liu, Y; Marlow, S; ... Wang, FR; + view all Kang, L; Wang, B; Güntner, AT; Xu, S; Wan, X; Liu, Y; Marlow, S; Ren, Y; Gianolio, D; Tang, CC; Murzin, V; Asakura, H; He, Q; Guan, S; Velasco‐Vélez, JJ; Pratsinis, SE; Guo, Y; Wang, FR; - view fewer (2021) The Electrophilicity of Surface Carbon Species in the Redox Reactions of CuO‐CeO 2 Catalysts. Angewandte Chemie , Article ange.202. 10.1002/ange.202102570. (In press).

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Abstract

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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