MOF-derived hcp-Co nanoparticles encapsulated in ultrathin graphene for carboxylic acids hydrogenation to alcohols
文献类型：期刊论文
| 作者 | BSRF用户 |
| 刊名 | JOURNAL OF CATALYSIS
 |
| 出版日期 | 2021 |
| 卷号 | 399页码:201--211 |
| ISSN号 | 0021-9517 |
| DOI | 10.1016/j.jcat.2021.05.013 |
| 文献子类 | Article |
| 英文摘要 | Highly efficient conversion of carboxylic acids to valuable alcohols is a great challenge for easily corroded non-noble metal catalysts. Here, a series of few-layer graphene encapsulated metastable hexagonal closed-packed (hcp) Co nanoparticles were fabricated by reductive pyrolysis of metal-organic framework precursor. The sample pyrolyzed at 400 degrees C (hcp-Co@G400) presented outstanding performance and stability for converting a variety of functional carboxylic acids and its turnover frequency was one magnitude higher than that of conventional facc-centered cubic (fcc) Co catalysts. In situ DRIFTS spectroscopy of model reaction acetic acid hydrogenation and DFT calculation results confirm that carboxylic acid initially undergoes dehydroxylation to RCH2CO* followed by consecutive hydrogenation to RCH2CH2OH through RCH2COH*. Acetic acid prefers to vertically adsorb at hcp-Co (002) facet with a much lower adsorption energy than parallel adsorption at fcc-Co (111) surface, which plays a key role in decreasing the activation barrier of the rate-determining step of acetic acid dehydroxylation. (C) 2021 Elsevier Inc. All rights reserved. |
| 电子版国际标准刊号 | 1090-2694 |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000659863400001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/293342]  |
| 专题 | 北京同步辐射装置 |
| 推荐引用方式 GB/T 7714 | BSRF用户. MOF-derived hcp-Co nanoparticles encapsulated in ultrathin graphene for carboxylic acids hydrogenation to alcohols[J]. JOURNAL OF CATALYSIS,2021,399:201--211. |
| APA | BSRF用户.(2021).MOF-derived hcp-Co nanoparticles encapsulated in ultrathin graphene for carboxylic acids hydrogenation to alcohols.JOURNAL OF CATALYSIS,399,201--211. |
| MLA | BSRF用户."MOF-derived hcp-Co nanoparticles encapsulated in ultrathin graphene for carboxylic acids hydrogenation to alcohols".JOURNAL OF CATALYSIS 399(2021):201--211. |
入库方式： OAI收割
来源：高能物理研究所
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