Mechanistic understanding of Cu-based bimetallic catalysts

Abstract

Copper has received extensive attention in the field of catalysis due to its rich natural reserves, low cost, and superior catalytic performance. Herein, we reviewed two modification mechanisms of co-catalyst on the coordination environment change of Cu-based catalysts: (1) change the electronic orbitals and geometric structure of Cu without any catalytic functions; (2) act as an additional active site with a certain catalytic function, as well as their catalytic mechanism in major reactions, including the hydrogenation to alcohols, dehydrogenation of alcohols, water gas shift reaction, reduction of nitrogenous compounds, electrocatalysis and others. The influencing mechanisms of different types of auxiliary metals on the structure-activity relationship of Cu-based catalysts in these reactions were especially summarized and discussed. The mechanistic understanding can provide significant guidance for the design and controllable synthesis of novel Cu-based catalysts used in many industrial reactions.

Key words： copper; bimetallic catalyst; coordination; modification mechanism; catalytic application

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 21576205). The authors also thank Prof. Jinlong Gong in School of Chemical Engineering and Technology, Tianjin University for his helpful suggestions and comments in the preparation of this manuscript.

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