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Effects and control of steam in the systems of methanol and DME synthesis from syngas over Cu-based catalysts
Luan, Youshun; Xu, Hengyong; Yu, Chunying; Li, Wenzhao; Hou, Shoufu; Xu HY(徐恒泳); Xu HY(徐恒泳)
关键词Steam Methanol Dme Synthesis Syngas Nano-silica Alcohol Pre-treatment
刊名CATALYSIS LETTERS
2008-10-01
DOI10.1007/s10562-008-9529-y
125期:3-4页:271-276
收录类别SCI
文章类型Article
部门归属8
项目归属801
产权排名1;1
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
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.
语种英语
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WOS记录号WOS:000259412500016
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被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/100681
专题中国科学院大连化学物理研究所
通讯作者Xu HY(徐恒泳); Xu HY(徐恒泳)
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.,...&徐恒泳.(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.
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