Unique properties of Ir/ZSM-5 catalyst for NO reduction with CO in the presence of excess oxygen
文献类型：期刊论文
| 作者 | Wang, AQ; Ma, L; Cong, Y; Zhang, T; Liang, DB |
| 刊名 | applied catalysis b-environmental
 |
| 出版日期 | 2003-02-28 |
| 卷号 | 40期号:4页码:319-329 |
| 关键词 | Ir/ZSM-5 Pt/ZSM-5 NO+CO+O-2 NO reduction TPD |
| 产权排序 | 1;1 |
| 英文摘要 | the reduction of no with co in the presence of excess oxygen was investigated over different noble metal catalysts for probing the relationship between catalytic properties and adsorption behaviors. among the four precious metal catalysts investigated, ir/zsm-5 was found to be the only active one for no reduction with co under lean conditions. with the decreasing of the ir content, higher no conversion and co selectivity was obtained. temperature-programmed reaction (tpr) studies of no/h-2/o-2 and no/co/o-2 showed that the pt/zsm-5 was active when h-2 was used as the reductant, whereas, the ir/zsm-5 was active when co was the reducing agent. this difference is due to the different mechanisms of the two reactions. temperature-programmed desorption (tpd) of no, co and o-2 showed that no could dissociate more easily over the ir/zsm-5 than on the pt/zsm-5, while the oxidation of co by o-2 proceeded more rapidly on the pt/zsm-5 than on the ir/zsm-5. the presence of excess o-2 inhibited drastically the dissociation of no, which is considered as the key step for the no-co reaction. the high dissociation rate of no over the ir/zsm-5 is visualized as the key factor for its superior high activity in no reduction with co under lean conditions. (c) 2002 elsevier science b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; engineering, environmental ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | noble-metal catalysts ; nitric-oxide ; oxidation ; removal ; methane ; zeolite ; mixtures ; ignition ; state ; ftir |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000181374900007 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/82489]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, AQ,Ma, L,Cong, Y,et al. Unique properties of Ir/ZSM-5 catalyst for NO reduction with CO in the presence of excess oxygen[J]. applied catalysis b-environmental,2003,40(4):319-329. |
| APA | Wang, AQ,Ma, L,Cong, Y,Zhang, T,&Liang, DB.(2003).Unique properties of Ir/ZSM-5 catalyst for NO reduction with CO in the presence of excess oxygen.applied catalysis b-environmental,40(4),319-329. |
| MLA | Wang, AQ,et al."Unique properties of Ir/ZSM-5 catalyst for NO reduction with CO in the presence of excess oxygen".applied catalysis b-environmental 40.4(2003):319-329. |
入库方式： OAI收割
来源：大连化学物理研究所
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