摘要
NOx储存-还原(NSR)技术是最有前景的稀燃氮氧化物消除技术,自从日本丰田公司1996年首次提出NOx储存-还原这一概念后,一直受到研究者的广泛关注。本文综述了近十余年来NSR催化剂(PBA型、水滑石型、钙钛矿型)的研究进展,重点概述了目前比较公认的NOx储存-还原的反应路径,以及NSR催化剂的失活机制,包括H2O和CO2的负面影响,热失活和硫中毒问题,最后展望了NOx储存还原技术未来的发展趋势。
The NOx storage and reduction （NSR） technology will be the most promising way to reduce the NOx emission from lean-burn engines. Since the concept of NOx storage and reduction was firstly proposed by Toyota Co. in 1996, the NSR catalysts have attracted much attention in environmental catalysis area. The main advances in different formulated NSR catalysts （PBA-type,hydrotalcite-type,perovskite-type） in the last decade are systematically reviewed in this paper. The emphases are put on the commonly recognized NOx storage and reduction pathway and the NSR catalysts deactivation mechanism, including the negative effect of H2O and CO2, the thermal aging and SO2 poisoning. At last, the developing tendency for NSR technology is proposed.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2009年第5期964-970,共7页
Progress in Chemistry
基金
国家高技术发展计划(863)项目(No.2006AA06Z348)
国家自然科学基金项目(No.206760097)资助
关键词
稀燃
氮氧化物
储存-还原
lean-burn
nitrogen oxides
storage-reduction
