Progress in the Research of Automotive Pd-only Three Way Catalysts

Feng Changgen, Wang Daxiang#
(School of Mechano-Electronic Enginerring, Beijing Institute of Technology, Beijing 100081)
(# Catalytic Purifying Engineering Center, China Automotive Research and Technology Center, Tianjin 300162)

Abstract Progress in the research of Pd-only three way catalysts was reviewed systematically in this paper. Increasing the selective reduction ability of NOx under lean burning condition, enhancing the thermal stability and decreasing the light-off temperature of the catalysts are the three key researching hot points in this area. And the quality of the honey comb g-Al2O3 coatings, additives and the preparation parameters are the major influencing foctors of the catalytic activation of the catalysts.
Key words Environmental engineering, Emission control, Pd-only three way catalysts

车用单钯三效催化剂的研究进展

冯长根 王大祥#
(北京理工大学机电工程学院 北京 100081 #中国汽车技术研究中心催化与净化工程中心 天津 300162)

摘要 对车用单钯三效催化剂的研究进展及现状进行了详细的综述与分析。目前对单钯三效催化剂的研究的热点和难点在于：(1) 提高催化剂对氮氧化物的选择还原能力； (2) 增强催化剂的高温热稳定性；(3) 降低催化剂的起燃温度。g-Al2O3的性能质量、助催化剂的选择及用量、涂层及催化剂的制备工艺等对单钯三效催化剂的催化活性起决定性作用。
关键词 环境工程学 汽车尾气治理 单钯三效催化剂

冯长根 男，50岁，教授，主要从事应用化学、环境与安全工程及爆炸与热物理的研究。
2002-12-06收稿，2003-02-26修回

(PDF全文下载c03048)