The dual single-atom In and P co-promoters boost dimethyldichlorosilane production in the Rochow-Müller reaction

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作   者：

Xu J.;  Jin B.;  Zhu Y.;  Geng J.;  Su F.;  Lu J.;  Wang Y.;  Ji Y.;  Chen W.;  Zhong Z.;  Xu G.;  Wu P.; 

作者机构：

School of Light Industry Beijing Technology and Business University;  Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences;  Institute of Industrial Chemistry and Energy Technology Shenyang University of Chemical Technology;  College of Chemistry and Chemical Engineering Hebei Minzu Normal University;  Institute of Process Engineering Chinese Academy of Sciences;  Energy & Catalysis Center School of Materials Science and Engineering Beijing Institute of Technology;  Department of Chemical Engineering Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion (MATEC) Guangdong Technion-Israel Institute of Technology (GTIIT);  Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of Chemistry East China Normal University; 

关键词：

CuO catalyst;  Dimethyldichlorosilane;  Rochow-Müller reaction;  Dual single-atom promoters;  Main group element; 

期刊名称：

Journal of Catalysis

i s s n：

0021-9517

年卷期：

2024 年 436 卷

页   码：

摘   要：

© 2024 Elsevier Inc.Investigating novel promoters and comprehending their roles is an important yet difficult task. In this study, we have introduced dual main-group single-atom In and P as co-promoters into the CuO surface lattice (In-P/CuO) via a straightforward hydrothermal CuO synthesis followed by impregnation. The In-P/CuO catalyst showed superior catalytic performance in dimethyldichlorosilane selectivity and yield to that of the pristine CuO and CuO with a single promoter in the important industrial Rochow-Müller reaction. The combination of thorough experimental characterization and density functional theory calculations reveals that the electron interaction between dual In and P promoters could optimize the local electronic structure of CuO and facilitate MeCl dissociation on the CuO surface, accelerating the transformation of CuO to Cu2O, then CuCl, and eventually the active phase Cu3Si and thereby enhancing overall activity. This work examines the synergistic interactions between dual main-group single-atom promoters in catalysts, offering a proven method for designing highly efficient catalysts.