A highly efficient and porous catalyst for simultaneous removal of NOx and diesel soot

被引：55
作者：
Peng, Xiaosheng [1 ]
Lin, He [1 ]
Shangguan, Wenfeng [1 ]
Huang, Zhen [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Ctr Combust & Environm Technol, Shanghai 200030, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 02期
基金：
中国国家自然科学基金;
关键词：
simultaneous removal; nitrogen oxides; diesel soot; perovskite-type oxides; catalysts;
D O I：
10.1016/j.catcom.2006.04.015
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A highly efficient and porous catalyst (La0.8K0.2Cu0.05Mn0.95O3) for simultaneous removal of nitrogen oxides (NOx) and diesel soot was synthesized and the sample was characterized by XRD, BET, SEM-EDS, XRF, and XPS. The results indicate that this catalyst is perovskite and it possesses the very good characteristics for multiphase catalytic reactions. The catalytic properties were appraised under simulated diesel engine exhaust by temperature programmed reaction (TPR). TPR results indicate that this catalyst is a promising candidate for simultaneous removal of NOx and diesel soot. The maximum NO conversion into N, and the ignition temperature of soot are 54.8% and 260 degrees C, respectively. Comparing with those in previous reports, the comprehensive performance of this catalyst is greatly improved by partial substitution of La with K and Mn with Cu at the same time. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：157 / 161
页数：5
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