Single-atom dispersed Co-N-C catalyst: structure identification and performance for hydrogenative coupling of nitroarenes
文献类型：期刊论文
| 作者 | Zhang, Leilei1; Liu, Wengang1,2; Yan, Wensheng3; Liu, Xiaoyan1; Yang, Xiaofeng1; Miao, Shu1; Wang, Wentao1; Wang, Aiqin1; Zhang, Tao1 |
| 刊名 | CHEMICAL SCIENCE
 |
| 出版日期 | 2016 |
| 卷号 | 7期号:9页码:5758-5764 |
| ISSN号 | 2041-6520 |
| DOI | 10.1039/c6sc02105k |
| 文献子类 | Article |
| 英文摘要 | Co-N-C catalysts are promising candidates for substituting platinum in electrocatalysis and organic transformations. The heterogeneity of the Co species resulting from high-temperature pyrolysis, however, encumbers the structural identification of active sites. Herein, we report a self-supporting Co-N-C catalyst wherein cobalt is dispersed exclusively as single atoms. By using sub-Angstrom-resolution HAADF-STEM in combination with XAFS and DFT calculation, the exact structure of the Co-N-C is identified to be CoN4C8-1-2O(2), where the Co center atom is coordinated with four pyridinic N atoms in the graphitic layer, while two oxygen molecules are weakly adsorbed on Co atoms in perpendicular to the Co-N-4 plane. This single-atom dispersed Co-N-C catalyst presents excellent performance for the chemoselective hydrogenation of nitroarenes to produce azo compounds under mild reaction conditions. |
| WOS关键词 | OXYGEN REDUCTION REACTION ; DOPED CARBON ELECTROCATALYSTS ; MOLECULARLY DEFINED COMPLEXES ; AROMATIC AZO-COMPOUNDS ; SELECTIVE HYDROGENATION ; PALLADIUM CATALYST ; COBALT OXIDE ; ACTIVE-SITES ; IRON ; EFFICIENT |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000382488500018 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/170030]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Wang, Aiqin; Zhang, Tao |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Catalysis, iChEM Collaborat Innovat Ctr Chem Energy Mat, Dalian Inst Chem Phys, 457 ZhongShan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Leilei,Liu, Wengang,Yan, Wensheng,et al. Single-atom dispersed Co-N-C catalyst: structure identification and performance for hydrogenative coupling of nitroarenes[J]. CHEMICAL SCIENCE,2016,7(9):5758-5764. |
| APA | Zhang, Leilei.,Liu, Wengang.,Yan, Wensheng.,Liu, Xiaoyan.,Yang, Xiaofeng.,...&Zhang, Tao.(2016).Single-atom dispersed Co-N-C catalyst: structure identification and performance for hydrogenative coupling of nitroarenes.CHEMICAL SCIENCE,7(9),5758-5764. |
| MLA | Zhang, Leilei,et al."Single-atom dispersed Co-N-C catalyst: structure identification and performance for hydrogenative coupling of nitroarenes".CHEMICAL SCIENCE 7.9(2016):5758-5764. |
入库方式： OAI收割
来源：大连化学物理研究所
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