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Extraction of Cesium and Strontium from Nitric Acid Solutions with Crown Ethers in Heavy Diluentsстатья
- Авторы: Koshcheeva A.M., Koshcheev A.M., Rodin A.V., Vidanov V.L., Anan’ev A.V.
- Журнал: Theoretical Foundations of Chemical Engineering
- Том: 2
- Номер: 58
- Год издания: 2024
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 438
- Последняя страница: 443
- Оригинальные версии: Экстракция цезия и стронция из азотнокислых растворов краун-эфирами в тяжелых разбавителях
- DOI: 10.1134/S0040579524700726
- Аннотация: A study was made of the ability of crown ethers in heavy polar organic diluents (chloroform; 1,2‑dichloroethane; bis(2-chloroethyl) ether; 1,1,7-trihydrododecafluoroheptyl alcohol) to extract cesium and strontium from nitrate solutions. It was shown that the use of bis(2-chloroethyl) ether as a polar diluent in the extraction with dibenzo-21-crown-7 and 4,4'(5')di-tert-butyldibenzo-18-crown-6 leads to sufficiently high distribution coefficients DCs of cesium from solutions with a nitric acid concentration of 1–5 mol/dm3. When extracting strontium with dicyclohexyl-18-crown-6, the highest distribution coefficients DSr were achieved using chlorine-substituted hydrocarbons and bis(2-chloroethyl) ether with a maximum extraction of 1–3 mol/dm3 HNO3, depending on the diluent used. Extraction systems based on selective crown ethers in a mixture of solvents were proposed for the co-extraction of cesium and strontium from nitric acid solutions of complex chemical compositions.
- Добавил в систему: Родин Алексей Владимирович