NO Oxidation-Storage and Nox Storage-Reduction over Combined Catalyst Mn/Ba/Al2O3-Pt/Ba/Al2O3
Mn/Ba/Al2O3, Pt/Ba/Al2O3 and the combined catalyst Mn/Ba/Al2O3-Pt/Ba/Al2O3 for NO oxidation-storage and storage-reduction were investigated. Mn/Ba/Al2O3 indicated high activity of NO oxidation and Nox storage in the oxidation-storage reaction and certain reduction activity in the storage-reduction reaction. The combination of Pt/Ba/Al2O3 with Mn/Ba/Al2O3 could enhance the activity of Nox storage-reduction under dynamic lean-rich burn conditions, and decrease CO produce. Compared to Pt/Ba/Al2O3 catalyst, although the Pt content decreased half over Mn/Ba/Al2O3-Pt/Ba/Al2O3, the Nox conversion increased 8.8％ at 400 ℃. Optimized C3H6 concentration and lean/rich time ratio, the pollutions such as Nox, C3H6 and CO could be eliminated effectively over the combined catalyst. When C3H6 concentration is 1000×10-6 and lean/rich time ratio is 8 min/1 min, the conversion of Nox and C3H6 reach 84.4％ and 90.9％ with 1.4％ CO yield.
NO oxidation-storage Nox storage-reduction Pt/Ba/Al2O3 Mn/Ba/Al2O3 combined catalyst
XIAO Jianhua LI Xuehui WANG Furong WANG Lefu
Department of Public Security, Guangdong Police College, Guangzhou 510230, Guangdong, China School of Chemical and Energy Engineering, South China University of Technology, Guangzhou 510640, G
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）