CA method promoted the formation of small copper crystallites and large copper surface area, thus leading to the formation of abundant active sites for dissociative-adsorption of hydrogen molecules. The TPD analysis provides strong evidence on the presence of a large number of accessible active sites in CA catalyst. The superior properties of catalyst synthesized using CA method had led to remarkable catalytic performance in CO2 hydrogenation reaction, whereby the methanol production rate achieved was 34.6%e 163.7% higher than the others, including a commercial methanol synthesis catalyst. In sum, it was found that CA method fulfills requirements such as preserving the structures of preshaped support, facilitate the formation of active sites with favorable properties, and easy to perform.