Impact of oxygen vacancy in CuO-ZnO catalysts on the selectivity of dimethyldichlorosilane monomer in the Rochow reaction
文献类型：期刊论文
| 作者 | Jiang, Xingyu2,3,4; Ji, Yongjun1; Li, Jing4; Zhu, Yongxia4; Kang, Ting4; Zhong, Ziyi5,6; Su, Fabing3,4; Xu, Guangwen2,3 |
| 刊名 | MOLECULAR CATALYSIS
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 504页码:9 |
| 关键词 | CuO-ZnO composites Foamed structure Rochow reaction Oxygen vacancies |
| ISSN号 | 2468-8231 |
| DOI | 10.1016/j.mcat.2021.111453 |
| 英文摘要 | In metal oxides, oxygen vacancies (O-V) are ubiquitous and intrinsic defects that can pronouncedly impact the physicochemical properties of the catalysts. In this work, we investigated the effect of the O-V concentration in CuO-based catalysts on the performance of the Rochow reaction. A series of foamed CuO-ZnO composite catalysts with a highly porous structure were synthesized by a facile co-precipitation method, followed by hydrogen reduction at different times. When used in the Rochow reaction to synthesize dimethyldichlomsilane (M2), the CuO-ZnO-20 catalyst with an appropriate O-V concentration exhibited the highest M2 selectivity at a similar Si conversion level of the other CuO-ZnO catalysts with different O-V concentrations. By correlating the structure and performance of the catalysts, we found that the O-V at an appropriate concentration in CuO-ZnO-20 acted as the adsorption sites for the reactant CH3Cl molecules, and generated an optimized electronic structure for surface CuO as confirmed by the X-ray photoelectron spectroscopy analysis (XPS), thereby optimizing the adsorption strength of CH3Cl and ultimately promoting the formation of alloyed CuxSi active phase. This work provides an effective strategy for designing heterogeneous catalysts with high selectivity by controlling the O-V concentration in the catalysts. |
| 资助项目 | National Natural Science Foundation of China[21878301] ; National Natural Science Foundation of China[21978299] ; National Natural Science Foundation of China[21908224] ; Research Foundation for Advanced Talents of Beijing Technology and Business University[19008020159] ; Guangdong Key discipline fund for this collaboration |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000632674700005 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Research Foundation for Advanced Talents of Beijing Technology and Business University ; Guangdong Key discipline fund for this collaboration |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/48185]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Ji, Yongjun; Su, Fabing; Xu, Guangwen |
| 作者单位 | 1.Beijing Technol & Business Univ, Sch Light Ind, Beijing 100048, Peoples R China 2.Shenyang Univ Chem Technol, Key Lab Resources Chem & Mat, Minist Educ, Shenyang 110142, Peoples R China 3.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 5.Guangdong Technion Israel Inst Technol GTIIT, Coll Engn, 241 Daxue Rd, Shantou 515063, Peoples R China 6.Technion Israel Inst Technol IIT, IL-32000 Haifa, Israel |
| 推荐引用方式 GB/T 7714 | Jiang, Xingyu,Ji, Yongjun,Li, Jing,et al. Impact of oxygen vacancy in CuO-ZnO catalysts on the selectivity of dimethyldichlorosilane monomer in the Rochow reaction[J]. MOLECULAR CATALYSIS,2021,504:9. |
| APA | Jiang, Xingyu.,Ji, Yongjun.,Li, Jing.,Zhu, Yongxia.,Kang, Ting.,...&Xu, Guangwen.(2021).Impact of oxygen vacancy in CuO-ZnO catalysts on the selectivity of dimethyldichlorosilane monomer in the Rochow reaction.MOLECULAR CATALYSIS,504,9. |
| MLA | Jiang, Xingyu,et al."Impact of oxygen vacancy in CuO-ZnO catalysts on the selectivity of dimethyldichlorosilane monomer in the Rochow reaction".MOLECULAR CATALYSIS 504(2021):9. |
入库方式： OAI收割
来源：过程工程研究所
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