化学镀法制备尾气催化剂的催化性能研究  

Catalytic performance research of automobile exhaust catalyst prepared by electroless plating method

作　　者：郑向江[1] 

机构地区：[1]山东临沂师范学院化学与资源环境学院,山东临沂276005

出　　处：《化学工程师》2009年第11期67-69,共3页Chemical Engineer

摘　　要：采用浸渍法和化学镀法将Pd负载到涂浆后的载体上,利用催化剂活性评价装置对两种方法制备的催化剂进行活性评价。结果表明,铈锆镧复合氧化物固溶体结构形式存在,而且有较好的热稳定性;氧化铝前驱体650℃焙烧2h后形成了γ-Al2O3;化学镀法制备的催化剂催化性能优于浸渍法;化学镀法制备催化剂二次评价后,活性有所降低;经过高温老化处理后对CO氧化仍然有比较好的催化选择性。Pd catalysts were prepared by electroless plating method or traditional impregnation method. The characterization results of catalysts showed that Ce-Zr-La solid solution had good thermal stability; catalytic properties of the catalyst prepared by electroless plating were superior to that of the catalyst prepared by impregnation; the catalytic performance of catalyst prepared by electroless plating was decreasing after characterized twice; after the catalyst aged at 1000℃ for 4h, it has had good catalytic activity of CO oxidation.

关 键 词：钯 浸渍 化学镀 催化性能 

分 类 号：TQ426.96[化学工程]