同时催化去除柴油机微粒和NO_x的试验研究(1)  

Investigation on Simultaneously Catalytic Removal of Diesel Particulate Matter and NO_x(1)

作　　者：刘光辉[1] 黄震[1] 上官文峰[1] 阎存仙[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：《内燃机学报》2003年第1期40-44,共5页Transactions of Csice

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)。

摘　　要：通过在γ Al2O3小球和柴油机微粒过滤器(DPF)上涂覆复合金属氧化物催化剂Cu0.95K0.05Fe2O4和La0.9K0.1CoO3,利用程序升温反应(TPR)技术,对同时催化去除柴油机微粒(PM)和NOx反应进行了试验研究。研究结果表明,Cu0.95K0.05Fe2O4和La0.9K0.1CoO3催化剂能够明显降低NOx的浓度和PM的起燃温度和燃尽温度,具有显著的PM-NOx同时去除催化反应活性。该方法集柴油机微粒的捕集、微粒的氧化燃烧和NOx的还原等功能于一体,是一种很有发展前途的柴油机排放后处理新技术。The simultaneous removal of NOxTB and particulate matter (PM) exhausted from diesel engine was studied by the Temperature Programmed Reaction (TPR) technique with γAl2O3 spherules and a diesel particulate filter (DPF), on which mixed metal oxide catalysts, Cu0.95K0.05Fe2O4 and La0.9K0.1CoO3 were loaded. The results have demonstrated that both catalysts have high catalytic activity for simultaneous removal of PM and NOx. This is a combined process of PM trapping as well as the catalytic reactions of soot oxidation and NOx reduction, and is the most promising aftertreatment of diesel exhausts.

关 键 词：催化 柴油机 微粒 NOx 试验 排放 氮氧化合物 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]