Partially sintered copper‒ceria as excellent catalyst for the high-temperature reverse water gas shift reaction

Hao-Xin Liu, Shan-Qing Li, Wei-Wei Wang, Wen-Zhu Yu, Wu-Jun Zhang, Chao Ma () and Chun-Jiang Jia ()
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Hao-Xin Liu: Shandong University
Shan-Qing Li: Chizhou University
Wei-Wei Wang: Shandong University
Wen-Zhu Yu: Shandong University
Wu-Jun Zhang: Hunan University
Chao Ma: Hunan University
Chun-Jiang Jia: Shandong University

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract For high-temperature catalytic reaction, it is of significant importance and challenge to construct stable active sites in catalysts. Herein, we report the construction of sufficient and stable copper clusters in the copper‒ceria catalyst with high Cu loading (15 wt.%) for the high-temperature reverse water gas shift (RWGS) reaction. Under very harsh working conditions, the ceria nanorods suffered a partial sintering, on which the 2D and 3D copper clusters were formed. This partially sintered catalyst exhibits unmatched activity and excellent durability at high temperature. The interaction between the copper and ceria ensures the copper clusters stably anchored on the surface of ceria. Abundant in situ generated and consumed surface oxygen vacancies form synergistic effect with adjacent copper clusters to promote the reaction process. This work investigates the structure-function relation of the catalyst with sintered and inhomogeneous structure and explores the potential application of the sintered catalyst in C1 chemistry.

Date: 2022
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DOI: 10.1038/s41467-022-28476-5

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