Catalytic activity and activation mechanism of potassium carbonate supported on perovskite oxide for coal char combustion
文献类型：期刊论文
| 作者 | Kim, Young-Kwang2; Hao, Li-fang3,4 ; Park, Joo-Il2; Miyawaki, Jin1; Mochida, Isao4; Yoon, Seong-Ho1,2
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| 刊名 | FUEL
 |
| 出版日期 | 2012-04-01 |
| 卷号 | 94期号:1页码:516-522 |
| 关键词 | Catalytic combustion Coal char K2CO3 Perovskite |
| ISSN号 | 0016-2361 |
| 通讯作者 | Yoon, SH |
| 英文摘要 | High activity catalyst system of K2CO3 supported on perovskite and its reaction mechanism for carbon materials were studied. It showed higher catalytic activity at lower temperature region than the case using gamma-alumina supporter or K2CO3 alone. And also, the catalyst supported perovskites showed one third smaller of catalyst loss after the reaction than that with the alumina supporter or K2CO3 alone. Catalytic activation of K2CO3 supported LaMn(1-x)CuxO(3) system was considered to be progress by two factors. First, K2CO3 has to be decomposed into K+ and CO32- ions. Second, decomposed K+ ions are activated with oxygen at the lower temperature than K2CO3 activation temperature. On oxide surface of support, K2CO3 was found to exist in partially dissociated form. In addition, perovskites had the active oxygen at the surface. K+ ions were able to be activated with the active oxygen on the surface of perovskites at the low temperature. The releasing temperature of the active oxygen could be controlled by Cu substitution in LaMn(1-x)CuxO(3) system. Using these properties, we synthesized a high activity K2CO3 supported on perovskite catalyst for carbon combustion. Oxygen contents of perovskite could be reduced easily. And also, the reduced state could be re-oxidized to the original oxygen level. This reversible property of oxygen contents of perovskites was considered to be the reason of high recovery of catalyst (K+). (C) 2011 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Energy & Fuels ; Engineering, Chemical |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | STEAM GASIFICATION ; SOOT COMBUSTION ; FLUIDIZED-BED ; OXIDATION ; DIOXIDE ; LAMN1-XCUXO3+LAMBDA ; TEMPERATURE ; PARTICLES ; GRAPHITE ; METHANE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000300497300063 |
| 公开日期 | 2013-10-24 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3914]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Kyushu Univ, Inst Mat Chem & Engn, Fukuoka 8168580, Japan 2.Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Fukuoka 8168580, Japan 3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 4.Kyushu Univ, Res & Educ Ctr Carbon Resources, Fukuoka 8168580, Japan |
| 推荐引用方式 GB/T 7714 | Kim, Young-Kwang,Hao, Li-fang,Park, Joo-Il,et al. Catalytic activity and activation mechanism of potassium carbonate supported on perovskite oxide for coal char combustion[J]. FUEL,2012,94(1):516-522. |
| APA | Kim, Young-Kwang,Hao, Li-fang,Park, Joo-Il,Miyawaki, Jin,Mochida, Isao,&Yoon, Seong-Ho.(2012).Catalytic activity and activation mechanism of potassium carbonate supported on perovskite oxide for coal char combustion.FUEL,94(1),516-522. |
| MLA | Kim, Young-Kwang,et al."Catalytic activity and activation mechanism of potassium carbonate supported on perovskite oxide for coal char combustion".FUEL 94.1(2012):516-522. |
入库方式： OAI收割
来源：过程工程研究所
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