PREPARATION OF Nb$sup 95$-FREE Zr$sup 95$ BY TTA EXTRACTION (in German)
The conditions for the extraction of Zr/sup 95/ from a mixture of zr/sup 95/ and Nb/sub 95/ with TTA (thenoyltrifluoroacetone) and back extraction with HC1 was investigated. The distribution coefficient was determined in 0.10 and 0.05 M TTA in benzol and 0.05 M TTA in xylol as a function of increasing HC1 concentration. The results showed a sharp increase in the distribution coefficient with HC1 concentration over about 6 N. The cause of the increased distribution coefficient was attributed to an ion exchange mechanism resulting in the preferential formation of a negatively charged ZrC1 complex. The method, previously suggested, of preparing a stock solution of Zr/sup 95/ in TTA-benzol, storing it in HNO/sub 3/ or HC1, and extracting the Zr/sup 95/ as needed by multiple washing with 2 N HC1. With increasing age of the stock solution, the extraction time is increased and the method is not suitable for the preparation of pure Zr/sup 95/. (J.S.R.)
- Research Organization:
- Universitat, Mainz
- NSA Number:
- NSA-14-004393
- OSTI ID:
- 4206141
- Journal Information:
- J. Inorg. & Nuclear Chem., Journal Name: J. Inorg. & Nuclear Chem. Vol. Vol: 11
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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