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Direct synthesis of tetraalkoxysilanes in a high-pressure mechanochemical reactorстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Krizhanovskiy Ilya, Temnikov Maxim, Anisimov Anton, Ratnikov Andrey, Levin Ivan S., Naumkin Alexander, Chistovalov Sergey, Muzafarov Aziz
- Журнал: REACTION CHEMISTRY & ENGINEERING
- Том: 7
- Год издания: 2022
- Первая страница: 769
- Последняя страница: 780
- DOI: 10.1039/d1re00522g
- Аннотация: We report the results of studies on the direct synthesis of tetraalkoxysilanes from alcohols and metallic silicon in a high-pressure mechanochemical reactor. The effect of the following factors on the process was considered: temperature (100–250 °C), amount of catalyst (0–20 wt%), type of catalyst, and type of the alcohol used in the synthesis. A silicon conversion of 90% with a selectivity of 94% with respect to a tetraalkoxysilane can be attained under optimal conditions. The studies showed that the temperature of the direct synthesis of alkoxysilanes was the lowest of the values reported to date (100 °C). Under these conditions, a silicon conversion of 77% and a selectivity of 98% with respect to a tetraalkoxysilane can be attained. It was shown that CuCl (20 wt%) exhibited the highest activity among copper-based catalysts, including CuF2, CuCl, CuBr, CuI, CuO, and Cu2O. In addition to MeOH, such alcohols as EtOH, n-BuOH, and EtO(CH2)2OH were used. The contact masses (CMs) sampled after 15 and 25 minutes and after reactions at 150, 200, and 250 °C were studied using SEM-EDX, PXRD, and XPS.
- Добавил в систему: Быстрова Александра Валерьевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | d1re00522g_1.pdf | 4,5 МБ | 12 февраля 2024 [bystrova] |