Pd-CeO2／Al2O3催化剂制备及性能评价研究  

Research on Pd-CeO2/Al2O3 Catalyst Prepare Method and Activity

作　　者：方晶晶[1] 许林军[1] 鲁毅钧[1] 肖存杰[1] 

机构地区：[1]海军医学研究所,上海200433

出　　处：《环境科学与技术》2009年第B06期249-251,332,共4页Environmental Science & Technology

摘　　要：浸渍法制备了AlO2＋CeO2为载体的曲催化剂，对制备中各因素对催化剂效果的影响作了初步研究。结果表明，稀土元素的存在对催化剂的性能明显改善。制备过程中焙烧和还原步骤对催化剂的活性影响最大，催化剂制备必须高于600℃焙烧，并用H2还原。同时考察了活性组分含量与催化剂性能的比例关系以及水蒸气对催化剂的活性的影响。A series of CeO2 modified Pd-CeO2/Al2O3 supported catalyst has been prepared by impregnation method. Addition of promoter of CeO2 and Pd,calcination temperature, H2 reduction and moisture on the catalytic activity for the CO oxidation have been investigated. It was found that additive CeO2 improves the catalytic activity obviously. Experimental results also shows that calcination temperature and reduction will affect the activity of Pd catalysts. Calcination temperature must higher than 600℃ and H2 reduction enhance the catalytic activity.

关 键 词：CO氧化 钯催化剂 稀土 AL2O3 

分 类 号：X830.2[环境科学与工程—环境工程]