用溶剂化金属原子浸渍（SMAI）法制备了SiO2、Cr2O3负载Cu催化剂.XPS测定表明三种载体上的Cu几乎全部以零价态存在．X射线增宽法测定表明随着Cu含量增加Cu颗粒增大．Cu催化剂在CO加氢中的催化活性与载体、Cu颗粒大小和Cu价态有关．Cr2O3对Cu催化活性有促进效应．Cr2O3负载Cu催化剂活性随Cu颗粒减小而增大，而SiO2作载体时，颗粒大小对活性无影响，零价Cu0为催化活性中心 SiO 2 and Cr 2 O 3 supported Cu catalysts were prepared by solvated metal atom impregnation (SMAI) method, and XPS measurements showed that almost all of Cu on the three supports existed as zero valent state. The results of X-ray broadening showed that Cu particles increased with the increase of Cu content. The catalytic activity of Cu catalyst in CO hydrogenation is related to the support, Cu particle size and Cu valence. Cr2O3 promoted the catalytic activity of Cu. The activity of Cu catalyst supported on Cr2O3 increased with the decrease of Cu particle size. However, when SiO2 was used as carrier, the particle size had no effect on the activity, and Cu0 was the active catalytic center