Separation of lithium from alkaline solutions with hydrophobic deep eutectic solvents based on beta-diketone

doi:10.1016/j.molliq.2021.117729

	Separation of lithium from alkaline solutions with hydrophobic deep eutectic solvents based on beta-diketone
	Zhang, Licheng; Li, Jinfeng; Ji, Lianmin; Li, Lijuan
第一作者	Zhang, Licheng
	2021-12-15
发表期刊	JOURNAL OF MOLECULAR LIQUIDS
ISSN	0167-7322
卷号	344
摘要	Deep eutectic solvent (DES) is gaining much attention as a sustainable and green solvent for chemical separation. This work proposed a series of beta-diketone based DES composed by benzoyl trifluoroacetone as hydrogen donor and compounds with different functional group as hydrogen acceptors. The newly prepared DES presented much higher lithium capacity than the conventional solvent extraction system. Due to the strong electron donating nature of phosphine oxide and hydrophobicity of longer carbon chains, TRPO and HBTA with molar ratio of 1/1 showed the best performance for lithium extraction efficiency and separation effect over sodium. The single crystal of the complex formed by lithium and diketone was obtained for the first time, and the stoichiometry of complex formed by HBTA/TRPO-DES and alkali metal was determined to be 1:1:1 by single crystal X-ray diffraction. The synthesized HBTA/ TRPO-DES was used to recover lithium from mother liquor of lithium carbonate which was a complex solution with high molar ratio of Na/Li, the extraction of lithium at O/A = 1/3 could reach 90%, and the separation factor of Li/Na was 335 under that condition. After scrubbing and stripping, the DES could be used to next extraction cycle, and the extraction ability remained practically constant. The present work may provide a novel way for lithium recovery from alkaline solutions. (C) 2021 Elsevier B.V. All rights reserved.
DOI	10.1016/j.molliq.2021.117729
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34192
专题	盐湖资源综合利用工程技术中心
推荐引用方式 GB/T 7714	Zhang, Licheng,Li, Jinfeng,Ji, Lianmin,et al. Separation of lithium from alkaline solutions with hydrophobic deep eutectic solvents based on beta-diketone[J]. JOURNAL OF MOLECULAR LIQUIDS,2021,344.
APA	Zhang, Licheng,Li, Jinfeng,Ji, Lianmin,&Li, Lijuan.(2021).Separation of lithium from alkaline solutions with hydrophobic deep eutectic solvents based on beta-diketone.JOURNAL OF MOLECULAR LIQUIDS,344.
MLA	Zhang, Licheng,et al."Separation of lithium from alkaline solutions with hydrophobic deep eutectic solvents based on beta-diketone".JOURNAL OF MOLECULAR LIQUIDS 344(2021).