| 摘 要： | Methanol synthesis from CO_2 and H_2 over various CuO-ZnO catalystsunder lower pressure has been studied.The properties of CuO-ZnO Catalystschanged with the solution pH value,precipitating agent,coprecipitatingmethod,thermal treating and activation conditions.XRD,BET,and TPR wereused to examine the surface structure and properties of catalysts.When 6.6≤pH≤8.9,copper and zinc cations could completely precipitate simultaneously.The eatalyst with CuO/ZnO wt.ratio of 50/50 has good activity,highmethanol selectivity and methanol yield.Calcination at high temperature andreduction in pure hydrogen would lead up to the decrease in catalytic activity.
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