Synthesis, structure, and properties of new difficultly soluble complex compounds of technetium with diethylenetriaminepentaacetic acidстатья
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Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 февраля 2014 г.
Авторы:
German K.E. ,
Melent’ev A.B. ,
Zubavichyus Ya V. ,
Kalmykov S.N. ,
Shiryaev A.A. ,
Tananaev I.G.
Журнал:
Radiochemistry
Том:
53
Номер:
2
Год издания:
2011
Издательство:
Pleiades Publishing, Inc.
Местоположение издательства:
New York, USA
Первая страница:
178
Последняя страница:
185
DOI:
10.1134/S1066362211020111
Аннотация:
To elucidate the causes of formation of difficultly soluble compounds of Tc with diethylenetriaminepentaacetic acid (DTPA) used in the extraction technology for spent nuclear fuel reprocessing, these compounds were studied by X-ray diffraction, IR, Raman, UV-visible, EXAFS, and ESR spectroscopy. The features of the Tc reduction in nitric acid solutions under the action of hydrazine, preceding the precipitate formation, were considered. The compound studied contains polyaminocarboxy ligands with mixed coordination. It is polymeric and polynuclear. Aging of the precipitate is accompanied by its gradual evolution toward formation of hydrated TcO 2. The Tc: DTPA ratio in the precipitate is close to 1: 1, and the prevalent valence state of Tc is IV. A possible structure of the compound was suggested on the basis of the results obtained, and ways to exclude the precipitate formation were suggested. © 2011 Pleiades Publishing, Ltd.
Добавил в систему:
Калмыков Степан Николаевич