In-situ regeneration mechanisms of hybrid catalysts in the one-step synthesis of dimethyl ether from syngas
文献类型：期刊论文
| 作者 | Luan, Youshun; Xu, Hengyong; Yu, Chunying; Li, Wenzhao; Hou, Shoufu |
| 刊名 | catalysis letters
 |
| 出版日期 | 2007-05-01 |
| 卷号 | 115期号:1-2页码:23-26 |
| 关键词 | dimethyl ether sintering deactivation regeneration reversible regeneration irreversible regeneration |
| ISSN号 | 1011-372x |
| 产权排序 | 1;1 |
| 通讯作者 | 徐恒泳 |
| 英文摘要 | one-step synthesis of dimethyl ether (dme) from h-2/co has been studied in a fixed bed reactor over hybrid catalyst cuoznoal2o3/gamma-al2o3-hzsm-5. the physicochemical properties of fresh and used catalysts were also studied by means of h-2-tpr, xrd and n2o chemisorptions. the results showed that for deactivated catalysts by sintering, redox cycle was an effective method for in-situ regeneration. there were two different regeneration mechanisms according to various atmospheres: (i) for o-2-syngas cycle, sintered cu particles were re-dispersed and initial activity was restored mostly. the process was reversible, which was called reversible regeneration; (ii) for n2o (co2)-syngas cycle, cu particles could not be re-dispersed and catalytic activity was restored a little due to the regulation of surface state. on the other hand, this process could depress the deactivation velocity and was irreversible, which was called irreversible regeneration. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | dme synthesis ; methanol synthesis ; synthesis gas ; deactivation ; cu/zno/al2o3 ; copper |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000246178000005 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/98625]  |
| 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 | Luan, Youshun,Xu, Hengyong,Yu, Chunying,et al. In-situ regeneration mechanisms of hybrid catalysts in the one-step synthesis of dimethyl ether from syngas[J]. catalysis letters,2007,115(1-2):23-26. |
| APA | Luan, Youshun,Xu, Hengyong,Yu, Chunying,Li, Wenzhao,&Hou, Shoufu.(2007).In-situ regeneration mechanisms of hybrid catalysts in the one-step synthesis of dimethyl ether from syngas.catalysis letters,115(1-2),23-26. |
| MLA | Luan, Youshun,et al."In-situ regeneration mechanisms of hybrid catalysts in the one-step synthesis of dimethyl ether from syngas".catalysis letters 115.1-2(2007):23-26. |
入库方式： OAI收割
来源：大连化学物理研究所
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