Study of Lithium-Extraction Systems Based on Benzo-15-Crown-5 Ether and Alkylimidazolium-Based Ionic Liquid.
Alexey A BezdomnikovLiudmila I DeminaLyudmila G Kuz'minaGalina V KostikovaValeriy I ZhilovAslan Yu TsivadzePublished in: Molecules (Basel, Switzerland) (2023)
The extraction of lithium from aqueous solutions of LiNTf 2 and LiCl salts using benzo-15-crown-5 ether (B15C5) as an extractant in [C8mim][NTf 2 ] 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. LiNTf 2 complexes with B15C5 with different LiNTf 2 :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 LiNTf 2 were determined via an infrared spectroscopic study of the extraction systems.