Extraction of cesium ions from aqueous solutions using calix[4]arene-bis(tert-octylbenzo-crown-6) in ionic liquids

H.M. Luo, S. Dai, P.V. Bonnesen, A.C. Buchanan, John Holbrey, N.J. Bridges, Robin Rogers

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Abstract

Solvent extraction of cesium ions from aqueous solution to hydrophobic ionic liquids without the introduction of an organophilic anion in the aqueous phase was demonstrated using calix[4]arene-bis(tert-octylbenzo-crown-6) (BOBCalixC6) as an extractant. The selectivity of this extraction process toward cesium ions and the use of a sacrificial cation exchanger (NaBPh4) to control loss of imidazolium cation to the aqueous solutions by ion exchange have been investigated.
Original languageEnglish
Pages (from-to)3078-3083
Number of pages6
JournalAnalytical Chemistry
Volume76
Issue number11
DOIs
Publication statusPublished - 12 Jul 2004

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