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Single-atom Sn-Zn pairs in CuO catalyst promote dimethyldichlorosilane synthesis

文献类型：期刊论文

作者Shi, Qi8,9; Ji, Yongjun7,8; Chen, Wenxin6; Zhu, Yongxia8; Li, Jing8; Liu, Hezhi8; Li, Zhi5; Tian, Shubo5; Wang, Ligen9; Zhong, Ziyi3,4
刊名NATIONAL SCIENCE REVIEW
出版日期2020-03-01
卷号7期号:3页码:600-608
关键词dual single-atom promoters CuO catalyst dimethyldichlorosilane synthesis Rochow reaction catalytic performance
ISSN号2095-5138
DOI10.1093/nsr/nwz196
英文摘要Single-atom catalysts are of great interest because they can maximize the atom-utilization efficiency and generate unique catalytic properties; however, much attention has been paid to single-site active components, rarely to catalyst promoters. Promoters can significantly affect the activity and selectivity of a catalyst, even at their low concentrations in catalysts. In this work, we designed and synthesized CuO catalysts with atomically dispersed co-promoters of Sn and Zn. When used as the catalyst in the Rochow reaction for the synthesis of dimethyldichlorosilane, this catalyst exhibited much-enhanced activity, selectivity and stability compared with the conventional CuO catalysts with promoters in the form of nanoparticles. Density functional theory calculations demonstrate that single-atomic Sn substitution in the CuO surface can enrich surface Cu vacancies and promote dispersion of Zn to its atomic levels. Sn and Zn single sites as the co-promoters cooperatively generate electronic interaction with the CuO support, which further facilitates the adsorption of the reactant molecules on the surface, thereby leading to the superior catalytic performance.
WOS关键词TOTAL-ENERGY CALCULATIONS ; WATER-GAS SHIFT ; CO OXIDATION ; METHYLCHLOROSILANES ; REDUCTION ; MECHANISM ; KINETICS ; IMPACT ; CERIA
资助项目National Natural Science Foundation of China[21878301] ; National Natural Science Foundation of China[21978299] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-01]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000537425800016
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China ; State Key Laboratory of Multiphase Complex Systems
源URL[http://ir.ipe.ac.cn/handle/122111/40969]  
专题中国科学院过程工程研究所
通讯作者Ji, Yongjun; Wang, Ligen; Wang, Limin; Su, Fabing
作者单位1.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China
2.Hunan Univ, Sch Phys & Elect, Changsha 410082, Peoples R China
3.Technion Israel Inst Technol IIT, IL-32000 Haifa, Israel
4.Guangdong Technion Israel Inst Technol GTIIT, Coll Engn, Shantou 515063, Peoples R China
5.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
6.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Construct Tailorable Adv Funct Ma, Beijing 100081, Peoples R China
7.Zhongke Langfang Inst Proc Engn, Langfang 065001, Peoples R China
8.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
9.Gripm Adv Mat Co Ltd, Beijing 101407, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Qi,Ji, Yongjun,Chen, Wenxin,et al. Single-atom Sn-Zn pairs in CuO catalyst promote dimethyldichlorosilane synthesis[J]. NATIONAL SCIENCE REVIEW,2020,7(3):600-608.
APA Shi, Qi.,Ji, Yongjun.,Chen, Wenxin.,Zhu, Yongxia.,Li, Jing.,...&Su, Fabing.(2020).Single-atom Sn-Zn pairs in CuO catalyst promote dimethyldichlorosilane synthesis.NATIONAL SCIENCE REVIEW,7(3),600-608.
MLA Shi, Qi,et al."Single-atom Sn-Zn pairs in CuO catalyst promote dimethyldichlorosilane synthesis".NATIONAL SCIENCE REVIEW 7.3(2020):600-608.

入库方式： OAI收割

来源：过程工程研究所

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