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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Physicochemical model of the formation of allocate goldстатья Исследовательская статья
- Авторы: Varfolomeev S.D., Kalynychenko V.N., Kuznetsov Yu A., Gachok I.V., Tsybenova S.B.
- Журнал: Russian Journal of Physical Chemistry A
- Том: 98
- Номер: 12
- Год издания: 2024
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 2798
- Последняя страница: 2809
- DOI: 10.1134/S0036024424702042
- Аннотация: This work is devoted to the kinetic analysis and modeling of patterns of the formation of nanoformsof metallic gold and mechanisms of the formation of metal macroparticles. The kinetics of the process in asteady state in solution and in a flow simulating the processes of deposit formation is considered. The autocatalyticnature of the synthesis of gold nanoparticles is shown, where the reverse oxidation of Au0 by strongoxidizer Au3+ is of fundamental importance. The kinetic behavior of the system is modeled, depending on theinitial concentration of the reagent (Au3+), concentrations of autocatalytic seeds (Au1+, Au0), and the concentrationof the reducing agent. The dependence of the multi-stage process on temperature is analyzed. Theformation of a gold placer in a flow is modeled mathematically, based on the theory of ideal displacementreactors. The model includes a zone of dispersed mineral gold (or nanodistributed gold), a zone of the hydroflow,and a zone of coagulation in the formation of macroparticles on a metal nucleus (a zone of precipitation).Calculations are made of the dependence of reagent distribution on the concentration of the reducingcomponent, the rate of hydraulic flow, the concentration of coagulants, and the precipitation of seeds.
- Добавил в систему: Гачок Ирина Владимировна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | PMFAG_Varfolommev_Gachok_etc_Эксперт_закл_.pdf | PMFAG_Varfolommev_Gachok_etc_Эксперт_закл_.pdf | 2,2 МБ | 19 ноября 2024 [GachokIV] | |
| 2. | PMFAG__Var_folomeev_Gachok_etc_2024.pdf | PMFAG__Var_folomeev_Gachok_etc_2024.pdf | 2,1 МБ | 19 ноября 2024 [GachokIV] |