中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Catalytic performance of novel Sn(x)Zr(1-x)O(2) solid solution catalysts for NO selective reduction by propene under lean-burn conditions

文献类型:期刊论文

作者Wei, JY; Zhu, YX; Xie, YC
刊名ACTA CHIMICA SINICA
出版日期2002-11-01
卷号60期号:11页码:1929-1935
关键词No Selective Catalytic Reduction (No-scr) Sn(x)Zr(1-x)o(2) Solid Solution Catalyst Lean-burn
ISSN号0567-7351
英文摘要A series of Sn(x)Zr(1=x)O(2) solid solution catalysts was prepared by co-current coprecipitation method using ammonia solution as precipitation agent and calcined at 500 degreesC for 4 It in air. Among them, the sample containing SnO(2) [w (SnO(2)) = 60%] showed the highest NO conversion of 71% at 350 degreesC, with 1.212 x 10(-3) NO, 1.095 x 10(-3) C(3)H(6) and 2.09% O(2) in He at a space velocity of 17000 h(-1). In comparison, the sample SZ160E2 comprising SnO(2) [w (SnO(2)) = 60%] was prepared by urea-based homogeneous precipitation method, which showed a higher NO conversion of 74% at 350 degreesC. Furthermore, the catalytic performance of SZ160E2 was examined thoroughly with different concentration of oxygen and propene, or at different temperature and space velocity, and the performance under steam was studied as well. The results illuminated that Sn(x)Zr(1-x)O(2) solid solution catalysts could sustain moderate activity after calcined at a temperature above 800 degreesC, at a high space velocity of 50000 h(-1), in the presence of excess O(2) content of 8.0% (lean-burn condition) or after steam treatment for 12 h. The best C(3)H(6)/NO molar ratio for SZ160E2 was from 1.24 to 1.65 and in this region about 80% NO could be reduced to the harmless N(2) at 350 degreesC. It was shown that Sn(x)Zr(1-x)O(2) solid solution catalysts had good thermal stability and hydrothermal stability, and could be used under lean-burn conditions and a high space velocity. According to the conversion of C(3)H(6) to CO(2) in NO-SCR reaction, we conclude that the combustion activity of propene was restrained and the activity for NO reduction was enhanced at the same time due to the insertion of zirconium ions into the crystal lattice of tin dioxide.
语种英语
WOS记录号WOS:000179416400005
出版者SCIENCE CHINA PRESS
源URL[http://ir.iccas.ac.cn/handle/121111/79427]  
专题中国科学院化学研究所
通讯作者Wei, JY
作者单位Peking Univ, State Key Lab Struct Chem Unstable & Stable Speci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Wei, JY,Zhu, YX,Xie, YC. Catalytic performance of novel Sn(x)Zr(1-x)O(2) solid solution catalysts for NO selective reduction by propene under lean-burn conditions[J]. ACTA CHIMICA SINICA,2002,60(11):1929-1935.
APA Wei, JY,Zhu, YX,&Xie, YC.(2002).Catalytic performance of novel Sn(x)Zr(1-x)O(2) solid solution catalysts for NO selective reduction by propene under lean-burn conditions.ACTA CHIMICA SINICA,60(11),1929-1935.
MLA Wei, JY,et al."Catalytic performance of novel Sn(x)Zr(1-x)O(2) solid solution catalysts for NO selective reduction by propene under lean-burn conditions".ACTA CHIMICA SINICA 60.11(2002):1929-1935.

入库方式: OAI收割

来源:化学研究所

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