Academic Journal
Study of the Effect of Zn, Sn, and Pb Additives on the Direct Mechanochemical Synthesis of Tetramethoxysilane in the Presence of CuCl and CuO Catalysts
| العنوان: | Study of the Effect of Zn, Sn, and Pb Additives on the Direct Mechanochemical Synthesis of Tetramethoxysilane in the Presence of CuCl and CuO Catalysts |
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| المؤلفون: | Ilya N. Kryzhanovskii, Maxim N. Temnikov, Anton A. Anisimov, Andrey K. Ratnikov, Inga V. Frank, Mikhail V. Shishkanov, Ulyana S. Andropova, Alexander V. Naumkin, Sergey M. Chistovalov, Aziz M. Muzafarov |
| سنة النشر: | 1753 |
| مصطلحات موضوعية: | Biochemistry, Inorganic Chemistry, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, traditional systems without, scanning electron microscopy, direct mechanochemical synthesis, 0 )] improves, active copper source, 2 , active reaction sites, different process steps, different steps, active silicide, process showed, tin promotes, situ milling, significantly lower, ray diffraction, pb additives, level provided, fluidization ), fixed bed, contact masses, article presents, 5000 ppm |
| الوصف: | 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 (SnCl 2 , Zn, and PbCl 2 ) 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 SnCl 2 [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 X-ray 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. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/Study_of_the_Effect_of_Zn_Sn_and_Pb_Additives_on_the_Direct_Mechanochemical_Synthesis_of_Tetramethoxysilane_in_the_Presence_of_CuCl_and_CuO_Catalysts/25093352 |
| DOI: | 10.1021/acs.iecr.3c03711.s001 |
| الاتاحة: | https://doi.org/10.1021/acs.iecr.3c03711.s001 https://figshare.com/articles/journal_contribution/Study_of_the_Effect_of_Zn_Sn_and_Pb_Additives_on_the_Direct_Mechanochemical_Synthesis_of_Tetramethoxysilane_in_the_Presence_of_CuCl_and_CuO_Catalysts/25093352 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.546768EF |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.iecr.3c03711.s001 |
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