Effects and control of steam in the systems of methanol and DME synthesis from syngas over Cu-based catalysts
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 | 2008-10-01 |
| 卷号 | 125期号:3-4页码:271-276 |
| 关键词 | steam methanol DME synthesis syngas nano-silica alcohol pre-treatment |
| 产权排序 | 1;1 |
| 通讯作者 | 徐恒泳 |
| 英文摘要 | effects of steam in the systems of methanol synthesis over cuznoal(2)o(3) catalyst and one-step dme synthesis over cuznoal(2)o(3)/gamma-al(2)o(3)-hzsm-5 were investigated, respectively. the results showed that there were two different effects in both systems: for the former (methanol synthesis), a little steam (< 10%) in the feed gas increased the catalytic activity and stability; for the latter (dme synthesis) where steam was created significantly, presence of steam in the feed gas accelerated sintering of cu particles and deactivation velocity. the results of hydro-thermal treatment of pre-reduced cuznoal(2)o(3) catalyst showed that high temperature (> 240 degrees c) and high steam content (> 10%) can greatly enhance the sintering velocity of cu crystalline. commercial nano-sio(2) and nano-al(2)o(3) with high surface area were utilized to control the steam concentration in the system of one-step dme synthesis. owing to their hydrophilic surface, however, neither of them depressed the deactivation velocity effectively. the pre-treatment of nano-sio(2) support with alcohol can change the surface of the support from hydrophilic to hydrophobic property, which can be found to control the steam surrounding the active metallic cu and keep the catalytic stability. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | dimethyl ether ; hybrid catalysts ; synthesis gas ; cu/zno/al2o3 ; temperature ; support ; zsm-5 |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000259412500016 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/100681]  |
| 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. Effects and control of steam in the systems of methanol and DME synthesis from syngas over Cu-based catalysts[J]. catalysis letters,2008,125(3-4):271-276. |
| APA | Luan, Youshun,Xu, Hengyong,Yu, Chunying,Li, Wenzhao,&Hou, Shoufu.(2008).Effects and control of steam in the systems of methanol and DME synthesis from syngas over Cu-based catalysts.catalysis letters,125(3-4),271-276. |
| MLA | Luan, Youshun,et al."Effects and control of steam in the systems of methanol and DME synthesis from syngas over Cu-based catalysts".catalysis letters 125.3-4(2008):271-276. |
入库方式： OAI收割
来源：大连化学物理研究所
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