二氧化钛负载氧化物催化剂上CO的氧化反应

CATALYTIC ACTIVITY OF CO OXIDATION OF TITANIA-SUPPORTED OXIDE CATALYSTS

对浸渍法和共沉淀法制备得到的各种TiO2 负载氧化物催化剂进行了活性组分的筛选 ,结果发现 ,两种方法得到的CuO催化剂均具有优良的CO氧化催化性能。在此基础上 ,考察了不同TiO2 载体 ,活性组分含量以及催化剂焙烧温度对其催化能力的影响。结果表明 ,具有高比表面、大孔体积的TiO2 载体负载的CuO催化剂具有较好的催化性能 ,活性组分CuO的最佳含量范围在 1 0 %～ 1 5 %之间 ,催化剂最佳焙烧温度为 4 0 0℃。

Titania-supported nonprecious oxides catalysts have been prepared by impregnation and coprecipitation, respectively, and tested for carbon monoxide oxidation The supported copper oxide catalyst showed higher catalytic activity for CO oxidation The effects of three titania supports, calcination temperature of catalyst as well as CuO loading upon the catalytic activity of CO oxidation were investigated The results indicated that the most favorable catalyst was prepared with the CuO loading of 10%～15%, titania support with higher surface area and large pore volume and calcined at 400℃