Morphological and catalytic stability of mesoporous peony-like ceria
文献类型：期刊论文
| 作者 | Xian, CN ; Li, H ; Chen, LQ ; Lee, JS |
| 刊名 | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| 出版日期 | 2011 |
| 卷号 | 142期号:1页码:202 |
| 关键词 | PREFERENTIAL OXIDATION LOW-TEMPERATURE CO OXIDATION CARBON-MONOXIDE HYDROGEN PROX FUEL-CELL OXIDE MICROSPHERES PERFORMANCE BEHAVIOR |
| ISSN号 | 1387-1811 |
| 通讯作者 | Li, H: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Mesoporous peony-like ceria has been previously investigated to exhibit superior catalytic properties for CO oxidation, ethanol reforming and anode catalysts for low temperature SOFC. In this work, morphological and catalytic stability are investigated upon heat treatments in reducing and oxidizing atmosphere at temperatures between 300 and 600 degrees C. Although the peony-like appearance remains stable upon heat treatment at 600 degrees C for up to 72 h, the BET surface area decreases from 150 to 30 m(2)g(-1) with nanocrystalline size increased from 6 to 15 nm. Catalytic activity of CO oxidation decreases such that T(50) (temperature for 50% conversion) increases from 153 to 197 degrees C. Although morphological variation is more prominent significant upon treatment in reducing atmosphere, the catalytic activity for CO oxidation degrades less than in oxidizing atmosphere. Oxygen vacancies produced upon reduction treatment are responsible for the superior catalytic activity despite the morphological disadvantage. (C) 2010 Elsevier Inc. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | NSFC of China [50730004]; Ministry of Education, Science and Technology [R32-2009-000-20074-0] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/42306]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xian, CN,Li, H,Chen, LQ,et al. Morphological and catalytic stability of mesoporous peony-like ceria[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2011,142(1):202. |
| APA | Xian, CN,Li, H,Chen, LQ,&Lee, JS.(2011).Morphological and catalytic stability of mesoporous peony-like ceria.MICROPOROUS AND MESOPOROUS MATERIALS,142(1),202. |
| MLA | Xian, CN,et al."Morphological and catalytic stability of mesoporous peony-like ceria".MICROPOROUS AND MESOPOROUS MATERIALS 142.1(2011):202. |
入库方式： OAI收割
来源：物理研究所
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