Abstract − Analytical Sciences, 19(8), 1097 (2003).
Ionic Liquids as a Novel Solvent forLanthanide Extraction
Kazunori NAKASHIMA, Fukiko KUBOTA, TatsuoMARUYAMA, and Masahiro GOTO
Department of Applied Chemistry, GraduateSchool of Engineering, Kyushu University, Fukuoka 812-8581,Japan
Octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) dissolved in an ionic liquids,1-butyl-3-methylimidazolium hexafluorophosphate, greatly enhancesextractability and selectivity of lanthanide cations compared to thatdissolved in conventional organic solvents; further, the recovery oflanthanides extracted into ionic liquids can be accomplished using severalstripping solutions containing complexing agents. The possibility ofutilizing ionic liquids as novel separation media in an industrialliquid-liquid extraction process was demonstrated.
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