Design of a novel bifunctional catalyst IrFe/Al2O3 for preferential CO oxidation
文献类型：期刊论文
| 作者 | Zhang, Wansheng1,2; Wang, Aiqin1; Li, Lin1; Wang, Xiaodong1; Zhang, Tao1 |
| 刊名 | catalysis today
 |
| 出版日期 | 2008-02-29 |
| 卷号 | 131期号:1-4页码:457-463 |
| 关键词 | CO oxidation PROX Ir-Fe catalyst iridium microcalorimetry |
| 产权排序 | 1;1 |
| 通讯作者 | 张涛 |
| 英文摘要 | in this study, a novel bifunctional catalyst irfe/al2o3, which is very active and selective for preferential oxidation of co under h-2-rich atmosphere, has been developed. when the molar ratio of fe/ir was 5/1, the irfe/al2o3 catalyst performed best, with co conversion of 68% and oxygen selectivity towards co2 formation of 86.8% attained at 100 degrees c. it has also been found that the impregnation sequence of ir and fe species on the al2o3 support had a remarkable effect on the catalytic performance; the activity decreased following the order of irfe/al2o3 > co-irfe/ al2o3 > fefr/al2o3. the three catalysts were characterized by xrd, h-2-tpr, ft-ir and microcalorimetry. the results demonstrated that when ir was supported on the pre-formed fe/al2o3, the resulting structure (irfe/al2o3) allowed more metallic ir sites exposed on the surface and accessible for co adsorption, while did not interfere with the o-2 activation on the feox species. thus, a bifunctional catalytic mechanism has been proposed where co adsorbed on ir sites and o-2 adsorbed on feox sites; the reaction may take place at the interface of ir and feox or via a spill-over process. (c) 2007 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | carbon-supported catalysts ; fuel-cell applications ; h-2-rich gas streams ; selective oxidation ; low-temperature ; metal-catalysts ; monoxide ; surface ; h-2 ; fe |
| 收录类别 | ISTP ; SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000253382100064 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/100067]  |
| 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 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Wansheng,Wang, Aiqin,Li, Lin,et al. Design of a novel bifunctional catalyst IrFe/Al2O3 for preferential CO oxidation[J]. catalysis today,2008,131(1-4):457-463. |
| APA | Zhang, Wansheng,Wang, Aiqin,Li, Lin,Wang, Xiaodong,&Zhang, Tao.(2008).Design of a novel bifunctional catalyst IrFe/Al2O3 for preferential CO oxidation.catalysis today,131(1-4),457-463. |
| MLA | Zhang, Wansheng,et al."Design of a novel bifunctional catalyst IrFe/Al2O3 for preferential CO oxidation".catalysis today 131.1-4(2008):457-463. |
入库方式： OAI收割
来源：大连化学物理研究所
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