The hydrogenation of CO2 to methanol, which is an important feedstock for the organic chemical industry and a potential alternative to fossil fuels, has received considerable attention from the viewpoint of environmental protection and effective utilization of carbon resources [1]. Catalysts based on Cu, especially Cu/ZnO/ZrO2, are highly effective for the synthesis of methanol from CO2 hydrogenation and have been investigated extensively [2], [3], [4], [5] and [6]. These Cu-based catalysts are usually prepared by co-precipitation from aqueous solutions [7] and [8]. However, precise pH control and long aging time of the suspension are required for this method. Furthermore, tedious washing is indispensable since residual alkaline metals have a negative effect on the catalytic activity [5