The influence of preparation methods on the behavior of Cu-Mn/ZrO_2 methanol catalysts

Cu-Mn/ZrO 2 catalysts have been prepare by oxalate gel coprecipitation as well as Na 2CO 3 coprecipitation methods, and the catalysts obtained behave remarkably different activity and selectivity for CO hydrogenation to methanols ynthesis. The catalysts prepared by oxalate gel coprecipitation perform a higher activity, its surface area and particle size are lower than those of Na 2CO 3 coprecipitation prepared catalysts. The XRD patterns exhibit a kind of complex oxide that only exists in Na 2CO 3 coprecipitation prepared catalysts. The interaction among Cu,Mn and Zr is thought to be important in the characteristics of catalysts.