Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation
Wang, QN; Shi, L; Li, W; Li, WC; Si, R; Schuth, F; Lu, AH
2018
发表期刊CATALYSIS SCIENCE & TECHNOLOGY
ISSN2044-4753
卷号8期号:2页码:472-479
文章类型期刊论文
摘要We report a designed Cu/C/SiO2 composite catalyst, which shows a high acetaldehyde selectivity (up to similar to 98%) and good stability for a 60 h test at 260 degrees C in ethanol dehydrogenation. Various characterization techniques demonstrate that the carbon covers the Si-OH groups on silica and promotes the reduction of Cu+ to Cu-0. This reduces the concentration of active sites for secondary reactions of CH3CHO, which leads to a high initial selectivity (similar to 93%) as compared to that of Cu/SiO2 (similar to 76%). Moreover, the chemical interaction between Cu and SiO2 of the C/SiO2 support, verified by X-ray photoelectron spectroscopy, enhances the interaction between the metal and the support and thus contributes to prevention of the agglomeration of Cu particles, which is the reason for the good catalytic stability of Cu/C/SiO2. Thus, this study is an example of how careful design of the catalyst can strongly improve the catalytic performance.
关键词Copper-based Catalysts Cu/sio2 Catalysts Dimethyl Oxalate Highly Efficient Ethylene-glycol Acetic-acid Oxide Hydrogenation Conversion Oxidation
DOI10.1039/c7cy02057k
收录类别SCI
语种英语
WOS记录号WOS:000423483200007
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28953
专题中科院上海应用物理研究所2011-2018年
作者单位1.Wang, QN
2.Shi, L
3.Li, W
4.Li, WC
5.Si, R
6.Schuth, F
7.Lu, AH
推荐引用方式
GB/T 7714
Wang, QN,Shi, L,Li, W,et al. Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation[J]. CATALYSIS SCIENCE & TECHNOLOGY,2018,8(2):472-479.
APA Wang, QN.,Shi, L.,Li, W.,Li, WC.,Si, R.,...&Lu, AH.(2018).Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation.CATALYSIS SCIENCE & TECHNOLOGY,8(2),472-479.
MLA Wang, QN,et al."Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation".CATALYSIS SCIENCE & TECHNOLOGY 8.2(2018):472-479.
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