Cu supported on thin carbon layer-coated porous SiO2 for efficient ethanol dehydrogenation

doi:10.1039/c7cy02057k

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	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
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2018
卷号	8 期号:2 页码:472-479
关键词	Copper-based Catalysts Cu/sio2 Catalysts Dimethyl Oxalate Highly Efficient Ethylene-glycol Acetic-acid Oxide Hydrogenation Conversion Oxidation
ISSN号	2044-4753
DOI	10.1039/c7cy02057k
文献子类	期刊论文
英文摘要	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.
语种	英语
WOS记录号	WOS:000423483200007
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/28953]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017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.