New Ideas on the Mechanism of Direct Syntheses of Alkyl(aryl)chlorosilanes

Turetskaya, R. A.; Андрианов, К. А.; Trofimova, I. V.; Chernyshev, E. A.

doi:10.1070/rc1975v044n03abeh002263

Cited by 19 publications

(15 citation statements)

References 3 publications

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“…It is also clear, however, that the composition of the surface phase of the alloy where catalysis occurs is probably not the same as that of the bulk . However, no further agreement or conclusion has been reached on the mechanism of the Cu 3 Si surface reactions and on the reasons for high selectivity of this process towards M2 . Several indications of silylene intermediates in the reaction of metal alloyed Si with CH 3 Cl or with methanol were reported.…”

Section: Chemistry: State‐of‐the‐artmentioning

confidence: 99%

Recent Advances in Rochow‐Müller Process Research: Driving to Molecular Catalysis and to A More Sustainable Silicone Industry

et al. 2019

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The Rochow‐Müller process, an old process that has been known for more than seventy years, is for the direct synthesis of methylchlorosilane. However, due to its unique economic efficiency, it is still extremely important in silicone industry, e. g., about 90 % of starting materials for producing silicones are obtained by this route. Although significant progress has been made in exploring high‐efficient catalysts and understanding its mechanism, a quantitative description of this reaction is still far‐fetched due to its high complexity. In addition, sustainable use and recycling of by‐products and waste solid have become imperative nowadays due to the increasing demands for atom economy and environmental protection. This paper provides a comprehensive overview and insights into Rochow‐Müller process from its catalysis to sustainable issues, including the catalyst development and reaction mechanism investigation, waste reutilization and their derived products. In addition, several emerging novel processes originated from Rochow‐Müller process are summarized. Lastly, challenges and perspectives with respect to this reaction are discussed. We hope this work has accurately reflected and recorded the transition of Rochow‐Müller process to modern molecular catalysis, and can promote a much more sustainable silicone industry.

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Section: Chemistry: State‐of‐the‐artmentioning

confidence: 99%

Recent Advances in Rochow‐Müller Process Research: Driving to Molecular Catalysis and to A More Sustainable Silicone Industry

et al. 2019

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“…26 According to Ref. 18, zinc and aluminium could catalyze the formation of the intermediate CuCl from copper and the alkyl chloride. A zinc species may act as a methylating agent, 27 or it may direct the dissociative adsorption of methyl chloride.…”

Section: The Promoter Zinc As a Moderator Of The Rochow Reactionmentioning

confidence: 99%

“…Frequently, the -phase Cu 3 Si has been considered as catalytically active, [1][2][3]16 but there have also been opposing views. 17,18 In a recent paper in this journal 4 we briefly reviewed relevant papers, and we reflected on the -phase hypothesis on the basis of catalytic and X-ray experiments on various contact masses. We concluded that the presence of -Cu 3 Si is neither a sufficient nor a necessary precondition of the Rochow reaction, and that -Cu 3 Si, if potentially active at all, needs appropriate modification in order to become active.…”

Section: On the Nature Of The Catalytically Active Speciesmentioning

confidence: 99%

SEM-EDX and SAM-AES Investigations on Rochow Contact Masses

Ehrich

Born

Richter³

et al. 1997

Appl. Organometal. Chem.

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“…Ref. 7) rejected this hypothesis, too, and ascribed a role in the copper redistribution processes within the contact mass to the q-phase. These authors assumed surface-chlorinated silicon species as active sites.…”

Section: Introductionmentioning

confidence: 94%

η‐Cu₃Si percentage and particle size in various rochow contact masses

Lieske

Fichtner

Kretzschmar

et al. 1995

Applied Organom Chemis

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Various Rochow contact masses have been characterized by catalytic tests as well as by X-ray diffraction with respect to q-Cu,Si percentage and particle size. The presence of q-CuSi in the contact masses is neither a necessary nor a sufficient precondition of catalytic activity, but a certain contribution of dispersed q-Cu3Si to the activity cannot be excluded. The results can be explained consistently by assuming highly dispersed or even two-dimensional Cu-Si species, not detectable by X-rays, as catalytically active species. The promoters zinc, antimony and tin do not significantly change the percentage and particle size of q-Cu3Si.

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New Ideas on the Mechanism of Direct Syntheses of Alkyl(aryl)chlorosilanes

Cited by 19 publications

References 3 publications

Recent Advances in Rochow‐Müller Process Research: Driving to Molecular Catalysis and to A More Sustainable Silicone Industry

Recent Advances in Rochow‐Müller Process Research: Driving to Molecular Catalysis and to A More Sustainable Silicone Industry

SEM-EDX and SAM-AES Investigations on Rochow Contact Masses

η‐Cu₃Si percentage and particle size in various rochow contact masses

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New Ideas on the Mechanism of Direct Syntheses of Alkyl(aryl)chlorosilanes

Cited by 19 publications

References 3 publications

Recent Advances in Rochow‐Müller Process Research: Driving to Molecular Catalysis and to A More Sustainable Silicone Industry

Recent Advances in Rochow‐Müller Process Research: Driving to Molecular Catalysis and to A More Sustainable Silicone Industry

SEM-EDX and SAM-AES Investigations on Rochow Contact Masses

η‐Cu3Si percentage and particle size in various rochow contact masses

Contact Info

Product

Resources

About

η‐Cu₃Si percentage and particle size in various rochow contact masses