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| Al2O3为载体的催化剂净化贫燃汽车尾气研究 | |
| 引用本文： | 朱天乐,郝吉明,傅立新,王建昕,李俊华,刘志明,崔翔宇.Al2O3为载体的催化剂净化贫燃汽车尾气研究[J].环境科学,2004,25(3):25-29. |
| 作者姓名： | 朱天乐 郝吉明 傅立新 王建昕 李俊华 刘志明 崔翔宇 |
| 作者单位： | 1. 北京航空航天大学环境工程系,北京,100083 2. 清华大学环境科学与工程系,北京,100084 3. 清华大学汽车安全与节能国家重点实验室,北京,100084 |
| 基金项目： | 国家863计划课题(2001AA643030) |
| 摘 要： | 在富氧条件下,考察了C3H6和C2H5OH在Ag/Al2O3、In/Al2O3、Sn/Al2O3、Co/Al2O3、Pt/Al2O3和Ag/Al2O3+Pt/Al2O3组合催化剂上选择性还原NO的性能.结果表明,Ag/Al2O3具有最高的NO还原活性.在负载型过渡金属氧化物催化剂上,会生成显著量的CO,其HC和CO氧化转化温度也远远高于Pt/Al2O3催化剂.串联组合Ag/Al2O3+Pt/Al2O3催化剂可显著拓宽活性温度范围,促进HC和CO氧化,降低N2O和CH3CHO生成量. |
| 关 键 词： | 贫燃 汽车尾气 Al2O3 催化还原 C3H6 C2H5OH |
| 文章编号： | 0250-3301(2004)03-0026-04 |
| 收稿时间： | 2003/8/26 0:00:00 |
| 修稿时间： | 2003/11/18 0:00:00 |
Alumina-supported Catalysts for the Catalytic Purification of Lean-burn Automobile Exhaust |
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| ZHU Tian-le,HAO Ji-ming,FU Li-xin,WANG Jian-xin,LI Jun-hu,LIU Zhi-ming and CUI Xiang-yu.Alumina-supported Catalysts for the Catalytic Purification of Lean-burn Automobile Exhaust[J].Chinese Journal of Environmental Science,2004,25(3):25-29. | |
| Authors: | ZHU Tian-le HAO Ji-ming FU Li-xin WANG Jian-xin LI Jun-hu LIU Zhi-ming and CUI Xiang-yu |
| Institution: | Department of Environmental Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China. zhutl@buss.edu.cn |
| Abstract: | Catalytic properties of Ag/Al2O3, In/Al2O3, Sn/Al2O3, Co/Al2O3, Pt/Al2O3 and a two-stage catalyst composed of Ag/Al2O3 and Pt/Al2O3 were investigated for the selective reduction of NO by C3H6 or C2H5OH in excess oxygen. The Ag/Al2O3 showed the highest NO reduction activity among the catalysts studied. A substantial amount of CO was formed over alumina-based transient metal oxides. HC and CO oxidations over Pt/Al2O3 occurred in relatively low temperatures, compared with the other catalysts. The sequential use of Ag/Al2O3 and Pt/Al2O3 was effective to broaden the temperature window for the reduction of NO, to improve oxidation of HC and CO and to inhibit the formation of N2O and CH3CHO. |
| Keywords: | lean-burn automobile exhaust catalytic reduction C3H6 C3H5OH |
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