| 稀燃汽油机尾气催化净化技术 | |
| 李俊华 ; 朱永青 ; 康守方 ; 傅立新 ; 郝吉明 ; LI Jun-hua ; ZHU Yongqing ; Kang Shoufang ; FU Li-xin ; HAO Ji-ming | |
| 2010-07-15 ; 2010-07-15 | |
| 会议名称 | 第四届全国环境催化与环境材料学术会议论文集 ; 第四届全国环境催化与环境材料学术会议 ; 中国北京 ; CNKI ; 中国化学会、中国环保产业协会 |
| 关键词 | 稀燃汽车 尾气 选择性催化还原 DeNOx Pt／Al2O3 Ag/Al2O3 乙醇 lean bu(?) automobile exhaust DeNOx Ag/ Al2O3 Pt/Al2O3 ethanol. X701 |
| 其他题名 | Selective catalytic reduction NO over Ag/Al_2O_3 and Pt/Al_2O_3 combined catalyst system in the presence of oxygen |
| 中文摘要 | 本文研究了Ag/Al2O3氧化物催化剂和Pt／Al2O3贵金属催化剂,选择有代表性的C3H4和C2H5OH做还原剂,考察了富氧条件下选择性催化还原NOx的性能以及H2O和SO2对不同催化剂活性的影响.结果表明,反应体系中含10％H2O和100ppmSO2,还原剂为乙醇时,Ag/Al2O3催化剂上表现出更宽的活性温度范围,NOx最大转化率达到90％以上。Ag／Al2O3氧化物催化剂和Pt／Al2O3贵金属催化剂串联组合时,在发动机台架上乙醇选择性还原NOx的最大转换率达90%,一氧化碳和碳氢化合物的净化效率大于90％。; The noble metal catalyst Pt/Al2O3 and metal oxide catalysts Ag/Al2O3 In/Al2O3, Sn/Al2O3 were prepared by different methods, and their performances for the selective reduction of NO by C3H6 or C2H5OH in excess oxygen were investigated. With the ethanol as reductant, high catalytic activity was attained on the Ag/Al2O3 catalyst, and the maximum NO conversion reached above 90%. A two-stage catalyst composed of Ag/Al2O3 and Pt/Al2O3 showed the highest NO reduction activity among the catalysts studied even in the presence of H2O and SO2. HC and CO oxidations over Pt/Al2O3 occurred in relatively low temperatures, compared with the other catalysts. The Ag/Al2O3 and Pt/Al2O3 combined system with ethanol as the reductant was effective to broaden the temperature window for the reduction of NO, and the maximum NO conversion reached 90% and the HC and CO conversions were above 90%.; 国家自然基金重点项目(20437010) 国家863课题(2003AA643020) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 会议论文 |
| 源URL | [http://hdl.handle.net/123456789/67583]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 李俊华,朱永青,康守方,等. 稀燃汽油机尾气催化净化技术[C]. 见:第四届全国环境催化与环境材料学术会议论文集, 第四届全国环境催化与环境材料学术会议, 中国北京, CNKI, 中国化学会、中国环保产业协会. |
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