Nature of Strontium Extraction by Synergistic Mixtures of Chlorinated Cobalt Dicarbollide and Polyethers Научная публикация
Конференция |
14th Radiochemical Conference 14-19 апр. 2002 , Marianske Lazne |
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Журнал |
Czechoslovak Journal of Physics
ISSN: 0011-4626 , E-ISSN: 1572-9486 |
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Вых. Данные | Год: 2003, Том: 53, Страницы: A501-A508 Страниц : 8 DOI: 10.1007/s10582-003-0064-1 | ||||
Ключевые слова | Strontium; 18C6; Hydrate Shell; Chlorinate Cobalt Dicarbollide; Oxyethyl Group | ||||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | United States Department of Energy | 81995 |
Реферат:
Extraction of strontium by synergistic mixtures of chlorinated cobalt dicarbollide (DCC) with different polyethers was studied. In the acidic media the distribution coefficients (DSr) decreases in the order 15-crown-5>PEG-400>18-crown-6 and does not correspond to the row of constants stability of the strontium complexes with these polyethers. When passing to the salt media (Li and Na nitrates) the row of DSr is change: PEG-400>18 crown 6>15 crown 5.
IR-spectroscopy study has shown that in synergistic mixtures the proton forms [H5O2+PEG], [H5O2+(15-crown-5)2] and [H3O3+(18 crown 6)] cations, which are exchange on Sr2+ resulting to formation [Sr2+PEG], [Sr2+(15-crown-5)2] and [Sr2+(18-crown-6)(H2O)n] cations correspondingly. The PEG-400 is the best among polyethylene glycols, since its all six COC groups and two even more active OH groups complete the first co-ordination sphere of Sr2+. Extremely low extractability of Sr2+ from acidic media in the presence of 18-crown-6 as compared with 15-crown-5 is mainly caused by the high stability of the [H3O+(18-crown-6)] cation that is responsible for less extractable hydrated Sr complex formation.
Библиографическая ссылка:
Smirnov I.V.
, Stoyanov E.S.
, Vorob'eva T.P.
Nature of Strontium Extraction by Synergistic Mixtures of Chlorinated Cobalt Dicarbollide and Polyethers
Czechoslovak Journal of Physics. 2003. V.53. P.A501-A508. DOI: 10.1007/s10582-003-0064-1 WOS РИНЦ
Nature of Strontium Extraction by Synergistic Mixtures of Chlorinated Cobalt Dicarbollide and Polyethers
Czechoslovak Journal of Physics. 2003. V.53. P.A501-A508. DOI: 10.1007/s10582-003-0064-1 WOS РИНЦ
Даты:
Опубликована в печати: | 1 янв. 2003 г. |
Идентификаторы БД:
Web of science | WOS:000184406200014 |
РИНЦ | 30717681 |
Chemical Abstracts | 2003:649364 |
Chemical Abstracts (print) | 139:354939 |
OpenAlex | W1975632619 |