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.

铜由于其丰富的自然储量，低成本和卓越的催化性能而在催化领域受到了广泛的关注。在此，我们综述了助催化剂对铜基催化剂配位环境变化的两种改性机理：（1）改变铜的电子轨道和几何结构而无任何催化作用；（2）作为具有一定催化功能的附加活性位点，以及它们在主要反应中的催化机理，包括加氢成醇，醇脱氢，水煤气变换反应，含氮化合物的还原，电催化等。特别总结和讨论了不同类型的辅助金属对这些反应中铜基催化剂的构效关系的影响机理。