Anodic Dissolution of Gallium in Alkali Metal Chloride Melts
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
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Anodic Dissolution of Gallium in Alkali Metal Chloride Melts
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| Автор |
Tokarev, O. V.
Volkovich, V. A. |
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| Тематика |
ANODIC DISSOLUTION
GALLIUM CHLORIDE MELTS GALLIUM CHLORIDES ANODIC POLARIZATION |
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| Описание |
Anodic dissolution of gallium in fused chlorides yields a mixture of Ga+ and Ga3+ ions.
The mean number of electrons involved in the reaction decreases with increasing temperature. Increasing temperature favors formation of Ga(I) species. Concentration of gallium chloride remaining in the melt decreases with increasing temperature. Received: 30.10.23. Revised: 13.12.23. Accepted: 19.12.23. Available online: 28.12.23. Gallium and gallium based alloys can be potentially used in pyrochemical and pyroelectrochemical reprocessing of spent nuclear fuels, particularly for separating actinides and rare earth fission products. However, the electrochemical behavior of gallium in high temperature molten salt electrolytes is very little studied. The present work was aimed at investigating the processes taking place during anodic dissolution of gallium in fused alkali chlorides (the ternary 6NaCl–9KCl–5CsCl eutectic mixture) and determining the ratio of gallium chloro-species in different oxidation states formed and remained in the melt. The experiments were performed between 550 and 750 °C, and the anodic current density varied from 0.024 to 0.094 A/cm2. Anodic polarization and coulometry were used, and the results obtained emonstrated that two gallium species, Ga(I) and Ga(III), were formed as a result of gallium anodic dissolution. The ratio between these two oxidation states depended on temperature and anodic current density. The method of processing the experimental data and the calculated values of the ratio of gallium ionic forms in the system under various conditions are presented. The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged. The authors thank Dr. D.G. Lisienko for help with chemical analysis of quenched electrolytes. |
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| Дата |
2024-01-18T12:45:23Z
2024-01-18T12:45:23Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Tokarev O. V. Anodic Dissolution of Gallium in Alkali Metal Chloride Melts / O. V. Tokarev, V. A. Volkovich // Chimica Techno Acta. — 2023. — Vol. 10, No. 4. — № 202310416.
2411-1414 http://elar.urfu.ru/handle/10995/129334 https://www.elibrary.ru/item.asp?id=60040559 10.15826/chimtech.2023.10.4.16 |
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| Язык |
en
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| Связанные ресурсы |
Chimica Techno Acta. 2023. Vol. 10. № 4
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| Формат |
application/pdf
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| Издатель |
Уральский федеральный университет
Ural Federal University |
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