铜负载量对铜铈变换催化剂结构与性能的影响  

Influence of Copper Ioadings on the Structure and Catalytic Performanceof CuO/CeO_2 Catalysts for Water-gas Shift Reaction

作　　者：何润霞[1] 赵文怡[1] 智科端[1] 姜浩强[1] 武芳[1] 周晨亮[1] 刘全生[1] 

机构地区：[1]内蒙古工业大学化工学院,内蒙古工业催化重点实验室,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2013年第4期253-258,共6页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：国家自然科学基金(21066008);内蒙古自然科学基金(2009ZD01);内蒙古人才基金;内蒙古工业大学"煤化工特色学科"(2008NRC006)资助

摘　　要：本文采用(NH4)2Ce(NO3)6和Cu(NO3)2为原料,通过浸渍法制备了不同铜负载量的CuO/CeO2水煤气变换催化剂,利用XRD、BET、TPR等对所合成样品进行了表征,并考察了其水煤气变换反应催化性能。结果表明,铜负载量对CuO/CeO2催化剂的结构与性能影响较大,适宜的铜负载量有利于提高CuO/CeO2催化剂的水煤气变换反应活性,浸渍法制备的CuO/CeO2催化剂最佳铜负载量为12%,较高的铜负载量(14-16%)形成的晶相氧化铜对CuO/CeO2催化剂的活性有抑制作用。The CuO/CeO2 water gas shift catalysts with different copper loadings were prepared by impregnation from （ NH4 ） 2 Ce （ NO3 ） 6 and Cu （ NO3 ） 2 as starting materials, The as - synthesized samples were tested for the water -gas shift reaction and characterized by XRD ,TPR/STPR,TPD. The results show that Copper loadings are an important factor to affect the structure and properties of CuO/CeO2 catalyst. The appropriate loaded amount of copper help to improve catalytic activity for water gas shift reaction, and the best copper loadings are 12%. the higher copper loading（ 14 -16% ）would formed crystalline phase of copper oxide which inhibited the catalytic activity of CuO/CeO2 catalyst.

关 键 词：水煤气变换 CUO CeO2催化剂 铜负载量 

分 类 号：TQ426.6[化学工程]