Extraction of protactinium(V) with 2-thenoyltrifluoroacetone from strongly acidic solutions |
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| Authors: | H B Maghrawy C Girgis A S Abdel-Gawad |
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| Institution: | (1) Nuclear Chemistry Department, Atomic Energy Establishment, Cairo, (Egypt) |
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| Abstract: | The extraction of Pa(V) from strongly acidic solutions of mineral acids is carried out with benzene solution of thenoyltrifluoroacetone. To interpret the data obtained, two extraction mechanisms representing the descending and ascending parts of the extraction curves are suggested. At lower acidity, the formation of PaO(TTA)3·HTTA species predominates. In going to higher acidity, an ion-pair formation between anionic protactiniuminorganic complex species and H2 TTA+ cation is assumed. |
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