Effect of preparation method on CuZnAl catalysts for ethanol synthesis from syngas

被引：46
作者：
Liu, Yong-Jun [1 ]
Zuo, Zhi-Jun [1 ]
Li, Chao [1 ]
Deng, Xuan [1 ]
Huang, Wei [1 ]
机构：
[1] Taiyuan Univ Technol, Key Lab Coal Sci & Technol, Minist Educ & Shanxi Prov, Taiyuan 030024, Shanxi, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 356卷
基金：
中国国家自然科学基金;
关键词：
Ethanol synthesis; Liquid-phase treatment method; CuZnAl catalyst; Syngas; METHANOL SYNTHESIS; CU/SIO2; CATALYSTS; DIMETHYL OXALATE; MIXED ALCOHOLS; HYDROGENATION; PERFORMANCE; TEMPERATURE; CONVERSION; SITES; CU;
D O I：
10.1016/j.apsusc.2015.08.039
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
CuZnAl catalysts without promoters were prepared by traditional method and complete liquid-phase method. Activity tests indicated that the catalysts prepared by complete liquid-phase method could efficiently catalyze syngas to ethanol and the selectivity to ethanol reached approximately 30%, comparatively, the catalyst prepared with traditional method exhibited high CO conversion with the liquid products being mainly composed of methanol. Characterization results showed that preparation method affected the composition and microstructure of the catalysts as well as the interaction among Cu, Zn, and Al species. It was also found that the existence of Cu+ and the strong weak acid on the catalysts surface was necessary for ethanol synthesis from syngas. This work provided a new concept that carbon chain could grow over CuZnAl catalysts without other promoters. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：124 / 127
页数：4
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