A Highly Porous Carbon Support Rich in Graphitic-N Stabilizes Copper Nanocatalysts for Efficient Ethanol Dehydrogenation

doi:10.1002/cctc.201601373

	A Highly Porous Carbon Support Rich in Graphitic-N Stabilizes Copper Nanocatalysts for Efficient Ethanol Dehydrogenation
	Yang, X; Zhang, P; Wang, QN; Wang, DQ; Li, WC; Zheng, YP; Chen, MS; Lu, AH; Yang X(杨霞); Wang DQ(王东琪)
刊名	CHEMCATCHEM
	2017
卷号	9 期号:3 页码:505-510
关键词	acetaldehyde copper dehydrogenation graphitic-N porous carbon
ISSN号	1867-3880
DOI	10.1002/cctc.201601373
文献子类	Article
英文摘要	The dehydrogenation of bioethanol to acetaldehyde and hydrogen is a sustainable process, owing to the atom-economical transformation and easy separation of the products. However, oxide-supported Cu catalysts show a low selectivity to acetaldehyde because of considerable side reactions caused by their oxygen-rich surfaces. A conventional carbon-supported Cu catalyst shows high selectivity, but is quickly deactivated owing to the migration and agglomeration of copper particles. Here, we have produced a highly porous nitrogen-rich carbon support that contains 6.2wt% N and can nicely disperse and stabilize Cu nanoparticles (similar to 6.3nm). If used for ethanol dehydrogenation, approximately 98% selectivity to acetaldehyde has been achieved, with excellent anti-agglomeration ability for as long as 500min. X-ray photoelectron spectroscopy (XPS) data prove that electrons transfer to the Cu particles from the N sites. Theoretical calculations further show that nitrogen sites enhance the adsorption of Cu-20 clusters and can stabilize them against coalescence and that graphitic-N sites (approximately 40% of total N content) are the most significant.
电子版国际标准刊号	1867-3899
WOS关键词	ISOPROPANOL DEHYDROGENATION ; DOPED CARBON ; CATALYSTS ; CONVERSION ; BIOETHANOL ; OXIDATION ; NANOPARTICLES ; PERFORMANCE ; MOLECULES ; BIOMASS
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000395587400020
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285151]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yang, X,Zhang, P,Wang, QN,et al. A Highly Porous Carbon Support Rich in Graphitic-N Stabilizes Copper Nanocatalysts for Efficient Ethanol Dehydrogenation[J]. CHEMCATCHEM,2017,9(3):505-510.
APA	Yang, X.,Zhang, P.,Wang, QN.,Wang, DQ.,Li, WC.,...&王东琪.(2017).A Highly Porous Carbon Support Rich in Graphitic-N Stabilizes Copper Nanocatalysts for Efficient Ethanol Dehydrogenation.CHEMCATCHEM,9(3),505-510.
MLA	Yang, X,et al."A Highly Porous Carbon Support Rich in Graphitic-N Stabilizes Copper Nanocatalysts for Efficient Ethanol Dehydrogenation".CHEMCATCHEM 9.3(2017):505-510.