Features of the mechanochemical synthesis of methylmethoxysilanes from silicon and dimethyl carbonate in the presence of promoters†

IF 3.1 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Reaction Chemistry & Engineering Pub Date : 2025-05-26 DOI:10.1039/D5RE00165J

I. N. Krizhanovskiy, M. N. Temnikov, A. K. Ratnikov, I. V. Frank, M. V. Shishkanov, A. A. Anisimov, A. V. Naumkin and A. M. Muzafarov

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Abstract

This work presents the results of a study on the CuCl-catalyzed reaction of silicon with dimethyl carbonate (DMC) in a high-pressure mechanochemical reactor (HPMR) at 250 °C. The reaction was carried out in the presence of both single promoters (Al, Zn, Sn) and their various combinations. The best selectivity toward dimethyldimethoxysilane was obtained using Sn (70%) at a silicon conversion of 30%. The best performance for silicon conversion (73%) was achieved with the combined use of Zn and Sn. The selectivity toward dimethyldimethoxysilane in this case was 38%. The influence of the type and number of promoters, as well as the material of the grinding bodies (GBs) on the selectivity and conversion of silicon in its reaction with DMC were investigated. The liquid reaction products were characterized by GC, GC-MS, ¹H, ¹³C, ²⁹Si NMR spectroscopy. Spent contact masses after syntheses were investigated by PXRD, SEM-EDX and XPS.

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在促进剂†存在下，硅和碳酸二甲酯机械化学合成甲基甲氧基硅烷的特点

本文介绍了在高压机械化学反应器（HPMR）中，在250°C下cucl催化硅与碳酸二甲酯（DMC）反应的研究结果。该反应是在单一启动子（Al, Zn, Sn）及其各种组合存在的情况下进行的。在硅转化率为30%的条件下，Sn（70%）对二甲基二甲氧基硅烷的选择性最佳。锌和锡复合使用的硅转化率最高，达到73%。对二甲基二甲氧基硅烷的选择性为38%。研究了促进剂种类、数量、研磨体材料对硅与DMC反应选择性和转化率的影响。液相反应产物采用GC、GC- ms、1H、13C、29Si核磁共振谱进行表征。利用PXRD、SEM-EDX和XPS对合成后的废接触团块进行了表征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reaction Chemistry & Engineering Chemistry-Chemistry (miscellaneous)

CiteScore

6.60

自引率

7.70%

发文量

227

期刊介绍： Reaction Chemistry & Engineering is a new journal reporting cutting edge research into all aspects of making molecules for the benefit of fundamental research, applied processes and wider society. From fundamental, molecular-level chemistry to large scale chemical production, Reaction Chemistry & Engineering brings together communities of chemists and chemical engineers working to ensure the crucial role of reaction chemistry in today’s world.