THE SEPARATION OF NIOBIUM AND TANTALUM BY THE EXTRACTION OF NIOBIUM WITH N- BENZOYLPHENYLHYDROXYLAMINE (BPH) (in Russian)
Journal Article
·
· Doklady Akad. Nauk S.S.S.R.
OSTI ID:4024677
The radioactive tracers Nb/sup 95/ and Ta/sup 182/ were used to follow the separation of Nb and Ta from a stock solution containing 0.35 mg/ml of Nb/sub 2/O/sub 5/, 0.30 mg/ml of Ta/sub 2/O/sub 5/ and 3% tartaric acid. One ml of 10% alcohol solution of BPH was added to 4 ml of the standard solution. After formation of a precipitate, 5 ml of chloroform is added and the mixture is extracted for 3 minutes. It was found that 98 to 100% of the Nb is extracted at a pH of 4 to 6 by a single extraction, while Ta does not extract at all in this pH range. Nb can be rapidly separated from Ta by this method at ratios of Nb: Ta = 100:1 and 1:100. (TTT).
- Research Organization:
- Inst. of Geochemistry and Analytical Chemistry, Academy of Sciences, USSR
- NSA Number:
- NSA-15-017011
- OSTI ID:
- 4024677
- Journal Information:
- Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 136
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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