Synergistic Extraction of Neptunium (IV) by Mixtures of HTTA (Thenoyltrifluoroacetone) and TBP (Tri-n-butylphosphate)
- 1 January 1979
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 14 (1) , 13-35
- https://doi.org/10.1080/01496397908057142
Abstract
The results obtained on the extraction of Np(IV) into mixtures of HTTA and TBP by solvent extraction and spectrophotometric methods are reported here. The predominant extractable species, when perchloric acid was employed for extraction, was found to be Np(TTA)4·TBP when benzene was used as the solvent and probably Np(TTA)3·3TBP+ClCO4 when nitrobenzene was used as the solvent. On the other hand, when nitric acid was employed for the extraction into a benzene solution of the mixture, a number of extractable species, Np(NO3)4-x (TTA) x ·yTBP (x = 0, 1, 2, 3, and 4, and y = 0, 1, and 2), appear to be involved. Values of some equilibrium constants are reported.Keywords
This publication has 23 references indexed in Scilit:
- Further studies of the rate affected synergic solvent extraction of Fe(III)-TTA—I: The effect of tri-n-octylphosphine oxide on the solvent extraction of iron(III) with 2-thenoyltrifluoroacetoneJournal of Inorganic and Nuclear Chemistry, 1973
- Solvent extraction of metal ions with mixed ligands—III: Adduct formation of Eu(III) and Th(IV) chelates with TTA and IPTJournal of Inorganic and Nuclear Chemistry, 1967
- Synergic effects in the solvent extraction of the actinides—IV: Trivalent plutonium, americium and europiumJournal of Inorganic and Nuclear Chemistry, 1961
- Synergic effects in the solvent extraction of the actinides—III tetravalent actinidesJournal of Inorganic and Nuclear Chemistry, 1961
- Synergism in the solvent extraction of di-, tri- and tetra-valent metal ions—I Synergic effects of different phosphate estersJournal of Inorganic and Nuclear Chemistry, 1961
- Synergic effects in the solvent extraction of the actinides—I uranium(VI)Journal of Inorganic and Nuclear Chemistry, 1960
- The determination of nitrogen, americium, neptunium, and uranium in P.P.M. Quantities in pure plutonium**Work performed under contract with the U.S. Atomic Energy Commission.Talanta, 1960
- Separation and Determination of Neptunium by Liquid-Liquid ExtractionAnalytical Chemistry, 1957
- The extraction of nitrates by tri-n-butyl phosphate (TBP). Part 1.—The system TBP + Diluent + H2O+HNO3Transactions of the Faraday Society, 1956
- Chemistry of Thorium in Aqueous Solutions. I. Some Organic and Inorganic Complexes1Journal of the American Chemical Society, 1950