Extraction of Mo(VI) from nitric acid solutions by diphenyl[dibutylcarbamoylmethyl]phosphine oxide
Journal Article
·
· Radiochemistry
OSTI ID:175703
- Vernadskii Institute of Geochemistry and Analytical Chemistry, Moscow (Russian Federation); and others
Extraction of Mo(VI) and Am(III) from nitric acid solutions of diphenyl[dibutylcarbamoylmethyl]phosphine oxide in fluoropol has been studied as a function of the phase contact time and concentrations of nitric acid, reagent, and molybdenum. Two different mechanisms of extraction of macroamounts of Mo(VI) are observed, depending on the acid concentration: from weakly acidic solutions the polymeric forms molybdenum are predominantly extracted, wheras from strongly acidic solutions the monomeric nitrate complexes are extracted; equilibrium is attained within 9 h and 3 min, respectively. The possibility has been demonstrated of americium (III) separation from molybdenum(VI) during reextraction with solutions of acetohydroxamic acid in 1 M nitric acid.
- OSTI ID:
- 175703
- Journal Information:
- Radiochemistry, Journal Name: Radiochemistry Journal Issue: 5 Vol. 37; ISSN RDIOEO; ISSN 1066-3622
- Country of Publication:
- United States
- Language:
- English
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