贫燃型汽车尾气NO<i><sub>x</sub></i>的催化净化

朱天乐; 郝吉明; 傅立新; 李俊华

贫燃型汽车尾气NO_x的催化净化

1.
北京航空航天大学材料科学与工程学院北京 100083
2. 清华大学环境科学与工程系,北京 100084

基金项目: 国家863基金资助项目(2001AA643030)

详细信息

作者简介:
朱天乐 (1963-),男,江西莲花人,副教授, zhutl@buaa.edu.cn.

中图分类号: X 511
计量
- 文章访问数: 2685
- HTML全文浏览量: 15
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2004-04-28
- 网络出版日期: 2004-10-31

Catalytic removal of nitrogen oxides for the lean-burn automobile exhaust

1.
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 用溶胶-凝胶混合法制备了Al₂O₃,Ag/Al₂O₃,Sn/Al₂O₃,Ga/Al₂O₃,Co/Al₂O₃和Pt/Al₂O₃等催化剂.在相同实验条件下,比较了C₃H₆在这些催化剂上还原NO的活性,并考察了反应条件对C₃H₆和CH₃OH在Ag/Al₂O₃上还原NO性能的影响.结果表明,Ag/Al₂O₃的还原NO活性优于其它催化剂.H₂O对Ag/Al₂O₃催化剂的NO还原具有可逆抑制作用,SO₂降低C₃H₆在Ag/Al₂O₃上还原NO的活性,但会显著提高CH₃OH还原NO的活性.
- 一氧化氮 /
- 丙烯 /
- 催化还原 /
- 甲醇
Abstract: Al₂O₃, Ag/Al₂O₃, Sn/Al₂O₃, Ga/Al₂O₃, Co/Al₂O₃ and Pt/Al₂O₃ catalysts were prepared by the sol-gel mixture method and the activities of NO reduction by C₃H₆ over the catalysts were compared in the presence of oxygen. The Ag/Al₂O₃ displayed the highest NO reduction activity among catalysts studied. The effects of reaction conditions on NO reduction by C₃H₆ and CH₃OH over Ag/Al₂O₃ were also investigated. The results showed that the presence of H₂O resulted in a decrease in the NO reduction activity and the inhibition effect was reversible. In the presence of SO₂ the activity of NO reduction by CH₃OH significantly increased while that of NO reduction by C₃H₆ decreased.
- nitrogen monoxide /
- propene /
- catalytic reduction /
- methanol

HTML全文

参考文献(1)

[1] Fritz A, Pitchon V. The current state of research on automotive lean NO_x catalysis[J]. Applied Catalysis B, 1997,13(1):1~25 [2]Hung M C, Kung H H. Lean NO_x catalysis over alumina-supported catalysts[J]. Topics in Catalysis, 2000,10(1):21~26 [3]Burch R, Breen J P, Meunier F C. A review of the selective reduction of NO x with hydrocarbons under lean-burn conditions with non-zeolitic oxide and platinum group metal catalysts[J]. Applied Catalysis B, 2002,39(2):283~303 [4]Pa rvulescua V I, Grangeb P, Delmonb B. Catalytic removal of NO[J]. Catalysis Today,1998,46(2):233~316 [5]Lin Y S, Chang C H, Gopalan R. Improvement of thermal stability of porous nanostructured ceramic membranes[J]. Industry Engineering Ceramics Research,1994,33(4):860~870 [6]Akama H, Matsushita K. Recent lean NOx catalyst technologies for automobile exhaust control[J]. Catalysis Surveys from Japan, 1999,3:139~146 [7]Amiridis M D, Zhang T J, Farrauto R J. Selective catalytic reduction of nitric oxide by hydrocarbons[J]. Applied Catalysis B, 1996,10(1-3):203~227 [8]Efthimiadis E A, Lionta G D, Christoforou S C. The effect of CH₄, H₂O and SO₂ on the NO reduction with C₃H₆[J]. Catalysis Today, 1998,40(1):15~26

施引文献

资源附件(0)

访问统计