Deciphering the promoting mechanism of SnO2 to Cu2O in the Rochow-Müller reaction

Heng Zhang; Baofang Jin; Yongxia Zhu; Liqing Ban; Kangjun Wang; Jing Xu; Jiajian Gao; Ziyi Zhong; Guangwen Xu; Fabing Su

doi:10.1016/j.jcat.2023.06.013

Deciphering the promoting mechanism of SnO2 to Cu2O in the Rochow-Müller reaction

Heng Zhang, Baofang Jin^*, Yongxia Zhu, Liqing Ban, Kangjun Wang^*, Jing Xu, Jiajian Gao^*, Ziyi Zhong, Guangwen Xu, Fabing Su^*

^*Corresponding author for this work

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Sn-based compounds are typical promoters for Cu-based catalysts used in the Rochow-Müller reaction, which manufactures most organosilicon monomers in the industry. However, the role of these promoters and the detailed structural evolution of Cu-based catalysts during the reaction have not been clearly clarified in the literature. Herein, a series of SnO2-modified commercial Cu2O catalysts (xSnO2/Cu2O, x = 0.01, 0.03, and 0.1) with different SnO2 contents (0.01, 0.03, and 0.1wt%) were prepared and tested for the Rochow-Müller reaction. Among these catalysts, 0.03SnO2/Cu2O exhibits the highest dimethyldichlorosilane selectivity of 87.8 % and Si conversion of 35.8 % at 325 oC. The detailed characterization and analysis reveal that introducing SnO2 promotes the transformation of Cu2O to CuCl and Cu and further to the active Cu3Si phase, thus leading to the high catalytic performance of the SnO2-modified Cu2O catalysts. This work provides new insights into the SnO2 promotion to the Cu-based catalysts and the catalytic mechanism in the Rochow-Müller reaction.

Original language	English
Journal	Journal of Catalysis
DOIs	https://doi.org/10.1016/j.jcat.2023.06.013
State	E-pub ahead of print - 12 Jun 2023

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@article{d7d9216b7c02431b92b441feaaa1d3d6,

title = "Deciphering the promoting mechanism of SnO2 to Cu2O in the Rochow-M{\"u}ller reaction",

abstract = "Sn-based compounds are typical promoters for Cu-based catalysts used in the Rochow-M{\"u}ller reaction, which manufactures most organosilicon monomers in the industry. However, the role of these promoters and the detailed structural evolution of Cu-based catalysts during the reaction have not been clearly clarified in the literature. Herein, a series of SnO2-modified commercial Cu2O catalysts (xSnO2/Cu2O, x = 0.01, 0.03, and 0.1) with different SnO2 contents (0.01, 0.03, and 0.1wt%) were prepared and tested for the Rochow-M{\"u}ller reaction. Among these catalysts, 0.03SnO2/Cu2O exhibits the highest dimethyldichlorosilane selectivity of 87.8 % and Si conversion of 35.8 % at 325 oC. The detailed characterization and analysis reveal that introducing SnO2 promotes the transformation of Cu2O to CuCl and Cu and further to the active Cu3Si phase, thus leading to the high catalytic performance of the SnO2-modified Cu2O catalysts. This work provides new insights into the SnO2 promotion to the Cu-based catalysts and the catalytic mechanism in the Rochow-M{\"u}ller reaction.",

author = "Heng Zhang and Baofang Jin and Yongxia Zhu and Liqing Ban and Kangjun Wang and Jing Xu and Jiajian Gao and Ziyi Zhong and Guangwen Xu and Fabing Su",

year = "2023",

month = jun,

day = "12",

doi = "10.1016/j.jcat.2023.06.013",

language = "英语",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Deciphering the promoting mechanism of SnO2 to Cu2O in the Rochow-Müller reaction

AU - Zhang, Heng

AU - Jin, Baofang

AU - Zhu, Yongxia

AU - Ban, Liqing

AU - Wang, Kangjun

AU - Xu, Jing

AU - Gao, Jiajian

AU - Zhong, Ziyi

AU - Xu, Guangwen

AU - Su, Fabing

PY - 2023/6/12

Y1 - 2023/6/12

N2 - Sn-based compounds are typical promoters for Cu-based catalysts used in the Rochow-Müller reaction, which manufactures most organosilicon monomers in the industry. However, the role of these promoters and the detailed structural evolution of Cu-based catalysts during the reaction have not been clearly clarified in the literature. Herein, a series of SnO2-modified commercial Cu2O catalysts (xSnO2/Cu2O, x = 0.01, 0.03, and 0.1) with different SnO2 contents (0.01, 0.03, and 0.1wt%) were prepared and tested for the Rochow-Müller reaction. Among these catalysts, 0.03SnO2/Cu2O exhibits the highest dimethyldichlorosilane selectivity of 87.8 % and Si conversion of 35.8 % at 325 oC. The detailed characterization and analysis reveal that introducing SnO2 promotes the transformation of Cu2O to CuCl and Cu and further to the active Cu3Si phase, thus leading to the high catalytic performance of the SnO2-modified Cu2O catalysts. This work provides new insights into the SnO2 promotion to the Cu-based catalysts and the catalytic mechanism in the Rochow-Müller reaction.

AB - Sn-based compounds are typical promoters for Cu-based catalysts used in the Rochow-Müller reaction, which manufactures most organosilicon monomers in the industry. However, the role of these promoters and the detailed structural evolution of Cu-based catalysts during the reaction have not been clearly clarified in the literature. Herein, a series of SnO2-modified commercial Cu2O catalysts (xSnO2/Cu2O, x = 0.01, 0.03, and 0.1) with different SnO2 contents (0.01, 0.03, and 0.1wt%) were prepared and tested for the Rochow-Müller reaction. Among these catalysts, 0.03SnO2/Cu2O exhibits the highest dimethyldichlorosilane selectivity of 87.8 % and Si conversion of 35.8 % at 325 oC. The detailed characterization and analysis reveal that introducing SnO2 promotes the transformation of Cu2O to CuCl and Cu and further to the active Cu3Si phase, thus leading to the high catalytic performance of the SnO2-modified Cu2O catalysts. This work provides new insights into the SnO2 promotion to the Cu-based catalysts and the catalytic mechanism in the Rochow-Müller reaction.

U2 - 10.1016/j.jcat.2023.06.013

DO - 10.1016/j.jcat.2023.06.013

M3 - 文章

SN - 0021-9517

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

Deciphering the promoting mechanism of SnO2 to Cu2O in the Rochow-Müller reaction

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