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Title: Selective Solid-liquid Extraction and Liquid-liquid Extraction of Lithium Chloride using Strapped Calix[4]pyrroles

Abstract

LiCl is a classic "hard" ion salt that is present in lithium-rich brines and a key component in end-of-life materials (i.e., used lithium-ion batteries). Its isolation and purification from like salts is a recognized challenge with potential strategic and economic implications. Here in this paper, we describe two ditopic calix[4]pyrrole-based ion pair receptors (2 and 3), that are capable of selectively capturing LiCl. Under solid-liquid extraction conditions, using 2 as the extractant, LiCl could be separated from a NaCl-KCl salt mixture containing as little as 1% LiCl with ~100% selectivity, while receptor 3 achieved similar separations when the LiCl level was as low as 200 ppm. Under liquid-liquid extraction conditions using nitrobenzene as the non-aqueous phase, the extraction preference displayed by 2 is KCl > NaCl > LiCl. Lastly, in contrast, 3 exhibits high selectivity towards LiCl over NaCl and KCl, with no appreciable extraction being observed for the latter two salts.

Authors:
 [1]; ORCiD logo [2];  [3];  [1];  [3]; ORCiD logo [2];  [4]
  1. Univ. of Texas, Austin, TX (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
  3. Gyeongsang National University (GNU), Jinju (Korea). Chemistry and Research Institute of Natural Science
  4. Univ. of Texas, Austin, TX (United States). Department of Chemistry
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
OSTI Identifier:
1439936
DOE Contract Number:  
AC05-00OR22725; FG02-01ER15186
Resource Type:
Journal Article
Resource Relation:
Journal Name: Angewandte Chemie (International Edition)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ion-pair receptor; solid-liquid extraction; lithium choride; calix[4]pyrrole; liquid-liquid extraction

Citation Formats

He, Qing, Williams, Neil J., Oh, Ju, Lynch, Vincent M., Kim, Sung Kuk, Moyer, Bruce A., and Sessler, Jonathan L.. Selective Solid-liquid Extraction and Liquid-liquid Extraction of Lithium Chloride using Strapped Calix[4]pyrroles. United States: N. p., 2018. Web. doi:10.1002/anie.201805127.
He, Qing, Williams, Neil J., Oh, Ju, Lynch, Vincent M., Kim, Sung Kuk, Moyer, Bruce A., & Sessler, Jonathan L.. Selective Solid-liquid Extraction and Liquid-liquid Extraction of Lithium Chloride using Strapped Calix[4]pyrroles. United States. doi:10.1002/anie.201805127.
He, Qing, Williams, Neil J., Oh, Ju, Lynch, Vincent M., Kim, Sung Kuk, Moyer, Bruce A., and Sessler, Jonathan L.. Fri . "Selective Solid-liquid Extraction and Liquid-liquid Extraction of Lithium Chloride using Strapped Calix[4]pyrroles". United States. doi:10.1002/anie.201805127.
@article{osti_1439936,
title = {Selective Solid-liquid Extraction and Liquid-liquid Extraction of Lithium Chloride using Strapped Calix[4]pyrroles},
author = {He, Qing and Williams, Neil J. and Oh, Ju and Lynch, Vincent M. and Kim, Sung Kuk and Moyer, Bruce A. and Sessler, Jonathan L.},
abstractNote = {LiCl is a classic "hard" ion salt that is present in lithium-rich brines and a key component in end-of-life materials (i.e., used lithium-ion batteries). Its isolation and purification from like salts is a recognized challenge with potential strategic and economic implications. Here in this paper, we describe two ditopic calix[4]pyrrole-based ion pair receptors (2 and 3), that are capable of selectively capturing LiCl. Under solid-liquid extraction conditions, using 2 as the extractant, LiCl could be separated from a NaCl-KCl salt mixture containing as little as 1% LiCl with ~100% selectivity, while receptor 3 achieved similar separations when the LiCl level was as low as 200 ppm. Under liquid-liquid extraction conditions using nitrobenzene as the non-aqueous phase, the extraction preference displayed by 2 is KCl > NaCl > LiCl. Lastly, in contrast, 3 exhibits high selectivity towards LiCl over NaCl and KCl, with no appreciable extraction being observed for the latter two salts.},
doi = {10.1002/anie.201805127},
journal = {Angewandte Chemie (International Edition)},
number = ,
volume = ,
place = {United States},
year = {Fri May 25 00:00:00 EDT 2018},
month = {Fri May 25 00:00:00 EDT 2018}
}