Catalytic hydrodehalogenation over supported gold: Electron transfer versus hydride transfer
文献类型：期刊论文
| 作者 | Wang, Yuanyuan1,2; Zhu, Qian1,2; Wei, Yan1,2; Gong, Yanjun1,2; Chen, Chuncheng1,2; Song, Wenjing1,2; Zhao, Jincai1,2 |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2018-09-05 |
| 卷号 | 231页码:262-268 |
| ISSN号 | 0926-3373 |
| 关键词 | Selective Hydrodehalogenation Photocatalysis Supported Gold Electron Transfer Hydride Transfer |
| DOI | 10.1016/j.apcatb.2018.03.032 |
| 英文摘要 | Selective hydrodehalogenation of a variety of aromatic halides (e.g., halogen subsitute phenones and hexafluorobenzene) using isopropanol as the hydrogen source was successfully achieved over supported Au nanoparticles. Distinct reaction pathways were established based on kinetic analysis and intermediate identification. Surface hydrides generated by isopropanol oxidation mediate the hydrodehalogenation by nucleophilic attack without the involvement of carbon centered radical. On the other hand, engeretic electrons on Au nanoparticles populated by visible light irradiation trigger the dissciation of carbon halogen bond (C-X) by injection to the substrates' lowest unoccupied molecular orbitals (LUMO). The super-linear dependency on light intensity, shape of the action spectrum and formation of aryl radical revealed that electron transfer dominates the hydrodehalogenation process, which features a significantly lower activation barrier than transfer of surface hydride. The observed activity is correlated to energy levels of the substrate electron accepting states. |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000430762300027 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43263]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Song, Wenjing |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, Key Lab Photochem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yuanyuan,Zhu, Qian,Wei, Yan,et al. Catalytic hydrodehalogenation over supported gold: Electron transfer versus hydride transfer[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,231:262-268. |
| APA | Wang, Yuanyuan.,Zhu, Qian.,Wei, Yan.,Gong, Yanjun.,Chen, Chuncheng.,...&Zhao, Jincai.(2018).Catalytic hydrodehalogenation over supported gold: Electron transfer versus hydride transfer.APPLIED CATALYSIS B-ENVIRONMENTAL,231,262-268. |
| MLA | Wang, Yuanyuan,et al."Catalytic hydrodehalogenation over supported gold: Electron transfer versus hydride transfer".APPLIED CATALYSIS B-ENVIRONMENTAL 231(2018):262-268. |
入库方式： OAI收割
来源：化学研究所
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