|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Study of the Effect of Zn, Sn, and Pb Additives on the Direct Mechanochemical Synthesis of Tetramethoxysilane in the Presence of CuCl and CuO Catalystsстатья
- Авторы: Krizhanovskiy Ilya N., Temnikov Maxim N., Anisimov Anton A., Ratnikov Andrey K., Frank Inga V., Shishkanov Mikhail V., Andropova Ulyana S., Naumkin Alexander V., Chistovalov Sergey M., Muzafarov Aziz M.
- Журнал: Industrial and Engineering Chemistry Research
- Год издания: 2024
- Издательство: American Chemical Society
- Местоположение издательства: United States
- DOI: 10.1021/acs.iecr.3c03711
- Аннотация: This article presents the results of our study on the direct mechanochemical synthesis of tetramethoxysilane in a high-pressure reactor using CuO and CuCl as catalysts and some promoters. The rate of the reaction of silicon with methanol in the presence of CuO is significantly lower than that in the presence of CuCl. A method for studying the influence of promoters (SnCl2, Zn, and PbCl2) on different process steps (formation of an active silicide and the reaction of silicon with methanol) has been proposed. It has been shown that the addition of 5000 ppm of SnCl2 [or the same amount of Sn as Sn(0)] improves the rate of the reaction between silicon and methanol in the presence of a low-active copper source (CuO) to the level provided by CuCl. Scanning electron microscopy, powder X-ray diffraction, and Xray photoelectron spectroscopy studies of the contact masses (CM) carried out at different steps of the process showed that tin promotes the reduction of CuO to Cu by silicon. The term “mechanochemical contact mass” was proposed because in traditional systems without in situ milling (fixed bed, slurry, and fluidization), the CMs are static, resulting in uneven formation of active reaction sites.
- Добавил в систему: Крижановский Илья Николаевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2024_PS_spirtyi_dobavki.pdf | 3,8 МБ | 6 февраля 2024 [KrizhanovskiyIN] | |
| 2. | экспертное заключение | ekspertnoe_zaklyuchenie_PSA_spirtyi_2024.pdf | 1,8 МБ | 6 февраля 2024 [KrizhanovskiyIN] |