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基于苯并-15-冠-5 醚和烷基咪唑鎓基离子液体的锂萃取体系研究。

Study of Lithium-Extraction Systems Based on Benzo-15-Crown-5 Ether and Alkylimidazolium-Based Ionic Liquid.

机构信息

Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Sciences, Leninsky Pr. 31-4, Moscow 119071, Russia.

Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, Leninsky Pr. 31, Moscow 119991, Russia.

出版信息

Molecules. 2023 Jan 17;28(3):935. doi: 10.3390/molecules28030935.

DOI:10.3390/molecules28030935
PMID:36770600
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9920876/
Abstract

The extraction of lithium from aqueous solutions of LiNTf and LiCl salts using benzo-15-crown-5 ether (B15C5) as an extractant in [C8mim][NTf] 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 complexes with B15C5 with different LiNTf: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 were determined via an infrared spectroscopic study of the extraction systems.

摘要

用苯并-15-冠-5 醚（B15C5）作为萃取剂，在[C8mim][NTf]离子液体中从 LiNTf 和 LiCl 盐的水溶液中提取锂离子。研究了萃取剂向水相的转移以及从 LiCl 溶液中提取锂离子过程中 Cl 离子的分布。首次分离并通过 X 射线衍射和红外光谱对不同 LiNTf:B15C5 比例的 B15C5 与 LiNTf 的配合物进行了表征。通过对萃取体系的红外光谱研究，确定了 LiCl 和 LiNTf 的萃取过程的差异。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f21/9920876/62221d5a3861/molecules-28-00935-g017.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f21/9920876/dfce7f4a5e27/molecules-28-00935-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f21/9920876/caab07475139/molecules-28-00935-g012.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2f21/9920876/62221d5a3861/molecules-28-00935-g017.jpg

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