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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Formaldehyde Solutionsстатья
- Автор: Silaev Michael M.
- Журнал: International Journal of Research - GRANTHAALAYAH
- Том: 8
- Номер: 4
- Год издания: 2020
- Издательство: Granthaalayah
- Местоположение издательства: India
- Первая страница: 188
- Последняя страница: 199
- DOI: 10.29121/granthaalayah.v8.i4.2020.25
- Аннотация: A mechanism of the initiated nonbranched-chain process of forming 1,2-alkanediols and carbonyl сompounds in alcohol–formaldehyde systems is suggested. The quasi-steady-state treatment is used to obtain kinetic equations that can describe the nonmonotonic (with a maximum) dependences of the formation rates of the products on the concentration of free unsolvated formaldehyde. The experimental concentrations of the free unsolvated form of formaldehyde are given at the different temperatures, solvent permittivity, and total concentrations of formaldehyde in water and alcohols. An empirical equation for calculating the free formaldehyde concentration in alcohol–formaldehyde (including water/ethanediol–formaldehyde) systems at various temperatures and total formaldehyde concentrations and an equation for evaluating solvent concentrations in these systems were derived. The experimental dependence of the ethanediol radiation-chemical yields on formaldehyde concentration in γ-radiolysis of methanol–formaldehyde system at 373–473 K is shown. Keywords: Nonbranched-Chain Process; Free Formaldehyde; 1-Hydroxyalkyl Radical; Formyl Radical; Competing Reaction; Equation.
- Добавил в систему: Силаев Михаил Михайлович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | A mechanism of the initiated nonbranched-chain process of forming 1,2-alkanediols and carbonyl сompounds in alcohol–formaldehyde systems is suggested. The quasi-steady-state treatment is used to obtain kinetic equations that can describe the nonmonotonic (with a maximum) dependences of the formation rates of the products on the free formaldehyde concentration. The experimental concentrations of the free unsolvated form of formaldehyde are given at the different temperatures, solvent permittivity, and total concentrations of formaldehyde in water and alcohols. An empirical equation for calculating the free formaldehyde concentration in alcohol–formaldehyde (including water/ethanediol–formaldehyde) systems at various temperatures and total formaldehyde concentrations and an equation for evaluating solvent concentrations in these systems were derived. The dependence of the ethanediol yields on formaldehyde concentration in γ-radiolysis of methanol–formaldehyde system at 373–473 K is shown | M.M._Silaev_IJRG_Formaldehyde_Solutions_2020_84_188-199.pdf | 613,0 КБ | 30 мая 2020 [SilaevMM] |