The Electrophilicity of Surface Carbon Species in the Redox Reactions of CuO‐CeO 2 Catalysts

  • Kang L
  • Wang B
  • Güntner A
  • et al.
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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‐CeO 2 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 CO 2 , carbonate, or carbonyl species in C1 chemistry.

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Kang, L., Wang, B., Güntner, A. T., Xu, S., Wan, X., Liu, Y., … Wang, F. R. (2021). The Electrophilicity of Surface Carbon Species in the Redox Reactions of CuO‐CeO 2 Catalysts. Angewandte Chemie, 133(26), 14541–14549. https://doi.org/10.1002/ange.202102570

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