Study of Lithium-Extraction Systems Based on Benzo-15-Crown-5 Ether and Alkylimidazolium-Based Ionic Liquid
Alexey A. Bezdomnikov, Л. И. Демина, Л.Г. Кузьмина, Г. В. Костикова, Valeriy I. Zhilov, А. Yu. Tsivadze
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.
Topics & Concepts
ChemistryIonic liquidExtraction (chemistry)Lithium (medication)Aqueous solutionEtherCrown etherInfrared spectroscopyInorganic chemistryAqueous two-phase systemIonPhysical chemistryChromatographyOrganic chemistryCatalysisMedicineEndocrinologyChemical Synthesis and CharacterizationRadioactive element chemistry and processingExtraction and Separation Processes