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- Title
The Electrophilicity of Surface Carbon Species in the Redox Reactions of CuO‐CeO<sub>2</sub> Catalysts.
- Authors
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
- 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.
- Subjects
X-ray absorption near edge structure; OXIDATION-reduction reaction; FOURIER transform infrared spectroscopy; X-ray powder diffraction
- Publication
Angewandte Chemie, 2021, Vol 133, Issue 26, p14541
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202102570