Separation of lithium isotopes by using solvent extraction system of crown ether-ionic liquid

doi:10.1016/j.fusengdes.2019.111338

	Separation of lithium isotopes by using solvent extraction system of crown ether-ionic liquid
	Sun, Huaxin; Jia, Yongzhong; Liu, Bing; Jing, Yan; Zhang, Quanyou; Shao, Fei; Yao, Ying
	2019-10
发表期刊	FUSION ENGINEERING AND DESIGN
ISSN	0920-3796
卷号	149 页码:111338
摘要	A solvent extraction system was selected to separate lithium isotopes by using 1-Ethyl-3-methyl-imidazolium-bis (trifluoromethysulfonyl)-imide ([EMIm][NTf2]) as extraction solvent, Dibenzo-15-crown-5 (DB15C5) as extracting agent and a traditional organic solvent as diluent. The effect of kinds of diluent, the content of ionic liquid in organic solvent, extraction time, extractant concentration and counter anions of lithium salt on the separation of lithium isotopes was studied. The single-stage separation factor a can reach up to 1.031 +/- 0.001 and the abundance of the light isotope Li-6 in organic phase can reach 7.76%. The exchange mechanism between the lithium salt and the ionic liquid is cation exchange. Lithium ions and ionic liquid cations are 1:1 exchange in the extraction system. Multistage experiment for separation of lithium isotope was also developed for enrichment of Li-6 as much as possible. The abundance of Li-6 in organic phase can reach 7.80% after 5 stages extraction experiment. Lithium of organic phase was stripped into the aqueous phase by 1 mol L-1 HCl solution.
DOI	10.1016/j.fusengdes.2019.111338
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34079
专题	盐湖资源综合利用工程技术中心中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Sun, Huaxin,Jia, Yongzhong,Liu, Bing,et al. Separation of lithium isotopes by using solvent extraction system of crown ether-ionic liquid[J]. FUSION ENGINEERING AND DESIGN,2019,149:111338.
APA	Sun, Huaxin.,Jia, Yongzhong.,Liu, Bing.,Jing, Yan.,Zhang, Quanyou.,...&Yao, Ying.(2019).Separation of lithium isotopes by using solvent extraction system of crown ether-ionic liquid.FUSION ENGINEERING AND DESIGN,149,111338.
MLA	Sun, Huaxin,et al."Separation of lithium isotopes by using solvent extraction system of crown ether-ionic liquid".FUSION ENGINEERING AND DESIGN 149(2019):111338.

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