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.
摘要：
研究了在[C8mim][NTf2]离子液体中使用苯并-15-冠-5醚（B15C5）作为萃取剂从LiNTf2和LiCl盐的水溶液中萃取锂的方法。确定了萃取剂向水相中的转变以及从LiCl溶液中萃取锂的过程中Cl-离子的分布。首次分离出具有不同LiNTf2：B15C5比例的LiNTf2与B15C5的配合物，并通过X射线衍射和红外光谱进行了表征。通过萃取系统的红外光谱研究确定了LiCl和LiNTf2萃取过程的差异。
