ZnO对合成甲醇Cu/ZnO/Al2O3催化剂性能的影响

用高速碰撞共沉淀法制备ｎ（ＣｕＯ）／ｍ（ＺｎＯ）／ｍ（Ａｌ２Ｏ３）比分别为６０／３０／１０和３０／６０／１０的１＾＃和２＾＃催化剂，结果表明高ＺｎＯ的２＾＃催化剂活性较好，分散度较大。ＸＰＳ测试表明２＾＃催化剂表面ＺｎＯ吸附的中间体（ＣＨｘ或ＣＨｘＯ）较多且表面的Ｃｕ＾＋１浓度较高，从而促进ＣＯ加氢合成甲醇的活性。

Effect of ZnO on Cu/ZnO/Al2O3 catalysts for methanol synthesis

Cu/ZnO/Al2O3 catalysts with ratios of 60/30/10 and 30/60/10 have been prepa red by high speed collision coprecipitation method. The performance of the catalyst with the higher ZnO content shows the higher activity in methanol synthesis. The characterization results in dicated that the catalyst with the higher ZnO content has higher dispersion. On the surface of th e higher ZnO content catalyst, there was more Cu+1 and more intermediate ( CHx and CHxO) adsorpted. It is beneficial for the CO hydrogenating to prod uce methanol.