负载型铜基超细催化剂的制备、表征和催化性能

PREPARATION, CHARACTERIZATION AND CATALYTIC PERFORMANCE OF ALUMINA SUPPORTED COPPER ULTRAFINE PARTICLE CATALYSTS

超细粒子作为一种新型催化材料以其高活性和优良的选择性引起催化工作者的重视．超细粒子的制备方法有很多种，其中溶胶凝胶法是金属氧化物超细粒子制备的重要方法之一［１］．目前，关于负载型超细粒子的制备方法主要是溶胶凝胶超临界干燥，一类是由超细载体浸渍以活性组...

Alumina supported copper ultrafine particle catalysts were prepared by modified sol gel methods. The crystalline phase, crystallography and dispersivity of the active components were studied by XRD, TEM, BET and copper surface area measurement. The catalytic performance was evaluated by amination of dodecanol. The results showed that the supported copper ultrafine catalysts prepared in this work had much higher specific surface area and active surface area, the active components were much more highly dispersed on the support surface, as compared with the ultrafine catalysts prepared by impregnation. The catalysts had high activity and excellent selectivity in the amination reaction.