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Published on: October 10, 2016
Study of Lithium-Extraction Systems Based on Benzo-15-Crown-5 Ether and Alkylimidazolium-Based Ionic Liquid
Alexey A Bezdomnikov1, Liudmila I Demina1, Lyudmila G Kuz'mina2
1Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Sciences, Leninsky Pr. 31-4, Moscow 119071, Russia.
Abstract:
The extraction of lithium from aqueous solutions of LiNTf2 and LiCl salts using benzo-15-crown-5 ether (B15C5) as an extractant in [C8mim][NTf2] ionic liquid was studied. The transition of the extractant into the aqueous phase and the distribution of Cl- ions during lithium extraction from LiCl solutions were determined. LiNTf2 complexes with B15C5 with different LiNTf2:B15C5 ratios were isolated for the first time and characterized via X-ray diffraction and IR spectroscopy. Differences in the extraction process of LiCl and LiNTf2 were determined via an infrared spectroscopic study of the extraction systems.
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