A Highly Porous Carbon Support Rich in Graphitic-N Stabilizes Copper Nanocatalysts for Efficient Ethanol Dehydrogenation
文献类型：期刊论文
| 作者 | 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)
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| 刊名 | CHEMCATCHEM
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：高能物理研究所
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