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D. I. Djigailo, S. V. Smirnova, I. I. Torocheshnikova, A. G. Vendilo, K. I. Popov, I. V. Pletnev
Extraction of nitrates of alkali and alkaline earth metals
with crown ether into hydrophilic ionic liquid in the presence of salting-out
agent
Abstract
It was shown that the hydrophilic ionic liquid
N-butyl-4-methylpyridinium tetrafluoroborate (BMPTF) is suitable for the
extraction of metal ions with dicyclohexano-18-crown-6. Magnesium sulphate was
used as salting-out agent, providing the formation of two immiscible phases in
the system ionic liquid – water. The pH profiles of the extraction of alkali
and alkaline earth metals have been determined; the influence of salting-out
agent concentration on the recoveries has been investigated.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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