催化剂与微粒接触对同时去除PM和NO_x反应的影响  

Influence of Contact Between Diesel Particulate Matter and Catalyst on Simultaneous Removal of PM and NO_x

作　　者：刘光辉[1] 上官文峰[1] 黄震[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《燃烧科学与技术》2003年第5期463-468,共6页Journal of Combustion Science and Technology

基　　金：教育部高等学校博士学科点专项科研基金资助项目(20010248003);GM中国科学研究基金资助项目(50222203).

摘　　要：通过在柴油机微粒过滤器(DPF)上涂覆复合金属氧化物催化剂Cu0.95K0.05Fe2O4,利用程序升温反应(TPR)技术,就柴油机微粒(PM)与催化剂的接触对PM和NOx同时去除反应的影响进行了试验研究.比较了PM与催化剂的紧接触和松接触,以及不同的挂烟量、不同的中间层、不同的催化剂涂覆方法对PM和NOx同时催化去除的影响.研究结果表明,改善载体和催化剂之间的过渡层和催化剂的负载工艺以及增大PM与催化剂的有效接触,对于提高PM和NOx同时去除的催化活性具有重要意义.The contact between particulate matter (PM) exhausted from diesel engine and catalyst, Cu0.95K0.05Fe2O4, was studied in simultaneous catalytic PM and NOx removal reaction with a diesel particulate filter (DPF) by the temperature programmed reaction (TPR) technique. Influences of contact conditions (tight contact or loose contact), PM content loaded, transition layers and the methods coating catalysts on the reaction were investigated. It is of great significance to increase the contact areas between PM and catalyst as well as improve the transition layer and the catalyst coated technique so as to enhance the activity of simultaneously catalytic removal of PM and NOx.

关 键 词：柴油机 微粒 氮氧化物 催化剂 接触 同时去除 

分 类 号：O643.36[理学—物理化学]