氧化铈气凝胶担载的铜催化剂对氢气中一氧化碳选择氧化的催化性能

Catalytic Property of Ceria Supported Copper Catalysts on Preferential Oxidation of CO

以超临界干燥法制备了氧化铈气凝胶,并以此为载体用浸渍法制备了铜催化剂。利用色谱流动反应法进行了活性测试,测试表明该催化剂对于富氢气氛中的CO选择性氧化具有较高的催化活性和较好的选择性,其中CuO的负载量为12.23％(质量分数)的催化剂对CO氧化的催化活性最高,且该催化剂在低空速下具有较好的抗H2O和抗CO2性能。

Ceria supported copper catalysts was pre- evaluation showed that these catalysts are of high pared by wet impregnation in which ceria supports cativity and selectivity for low temperature oxidation of were prepared by SCD method. The following activity CO. Among those, 12.23% CuCeO2 was the best one.