铈对低负载Pd/Al_2O_3催化剂加氢丙烯腈的改性效应  

Modification effect of ceria to low-loaded Pd/Al_2O_3on gas phase hydrogenation of acrylonitrile

作　　者：肖述章[1] 楼芝英[1] 周国光[1] 徐祖辉[1] 

机构地区：[1]上海师范大学化学系,上海200234

出　　处：《化学研究与应用》2004年第1期82-84,共3页Chemical Research and Application

摘　　要：Low-loaded Pd（0.05 wt.%）/Al2O3 catalysts modified by ceria were prepared by impregnation method.Gas phase hydrogenation of acrylonitrile to propionitrile was selected as probe reaction to study the effect of the light rare earth element cerium on the cataltic activity and stability.Experimental results indicated that addition of a small mount of ceria improved the catalytic activity and stability greatly.The best content of ceria was 3 wt.%,and consecutive impregnation method was prior to co-impregnation method.Low-loaded Pd(0.05 wt.%)/Al_2O_3 catalysts modified by ceria were prepared by impregnation method.Gas phase hydrogenation of acrylonitrile to propionitrile was selected as probe reaction to study the effect of the light rare earth element cerium on the cataltic activity and stability.Experimental results indicated that addition of a small mount of ceria improved the catalytic activity and stability greatly.The best content of ceria was 3 wt.%,and consecutive impregnation method was prior to co-impregnation method.

关 键 词：铈 氧化铝负载钯催化剂 加氢活性 丙烯腈 改性效应 

分 类 号：O623.761[理学—有机化学] O643.36[理学—化学]