Partitioning of transuranic metal ions to ionic liqudds containing the ionizable complexant cyanex-272

V. A. Cocalia*, J. D. Holbrey, S. K. Spear, M. P. Jensen, R. D. Rogers

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Extraction of americium(III) ions with ionizable dialkylphosphoric or dialkylphosphinic acids from aqueous solutions to the ionic liquid, l-decyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide have been investigated. The results are compared with the analogous traditional molecular solvent systems and show similar patterns for the distribution ratios in each system. Studies indicate that the metal ion coordination environments, elucidated from EXAFS and UV-visible spectroscopy measurements on Nd 3+ and Eu3+ respectively, as stand-ins for Am 3+, are equivalent in the two systems with coordination of the metal ion with three extractant dimers forming a neutral complex. Extraction equilibria and metal coordination studies demonstrate that with these complexants, the extraction mode and metal coordination environment are conserved in the IL and molecular organic solvent systems.

Original languageEnglish
Title of host publicationMolten Salts XIV - Proceedings of the International Symposium
Pages779-789
Number of pages11
VolumePV 2004-24
Publication statusPublished - 01 Dec 2006
Event206th ECS Meeting - Honolulu, United States
Duration: 03 Oct 200408 Oct 2004

Conference

Conference206th ECS Meeting
CountryUnited States
CityHonolulu
Period03/10/200408/10/2004

ASJC Scopus subject areas

  • Engineering(all)

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