Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids

doi:10.1002/cjoc.202000210

	Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids
	Bai, Ruibing 1,4; Wang, Junfeng 1; Cui, Li 3; Yang, Shicheng 1; Qian, Wei 1; Cui, Penglei 1; Zhang, Yanqiang 1,2
刊名	CHINESE JOURNAL OF CHEMISTRY
	2020-12-01
卷号	38 期号:12 页码:1743-1751
关键词	Functional ionic liquids Lithium Magnesium High Mg Li ratio Salt lake brine Extraction mechanism
ISSN号	1001-604X
DOI	10.1002/cjoc.202000210
英文摘要	The Summary of main observation and conclusion: The extraction of Li+ from the high Mg/Li ratio brine was performed using hydroxyl functional ionic liquids (ILs) as the coextractant and tributyl phosphate (TBP) as the extractant. Firstly, the extractive system, 1-(2-hydroxyethyl)-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HOEmim][NTf2]) + TBP was proved to exhibit the highest extraction efficiency of Li+ (88.15%) from LiCl aqueous solutions among the extractants composed of different ILs, TBP, and ILs + TBP. Effects of various extraction parameters on the extraction efficiencies of Li+ and Mg2+ were then investigated. 95.01% of Li+ was extracted and the Li/Mg separation factor reached 405.76 in a single-stage at 278.15 K and O/A of 2 : 1. The extraction complexes were determined by the slope analysis method and ESI-MS analysis, and the metal complexes in the organic phase were indicated to be mainly [Li center dot 2TBP][NTf2]. The striping study showed that 92.86% of Li+ was stripped with 1.0 mol center dot L-1 HCl. 98% extraction capacity of the synergy extractants was remained after 5 regeneration cycles. The thermodynamic parameters (Delta G degrees, Delta H degrees, and Delta S degrees), together with the mechanism of the Li+ extraction were further demonstrated finally. According to the results, [HOEmim][NTf2] + TBP extraction system showed promising performance in extracting lithium from salt lake brine with high Mg/Li ratio.
资助项目	National Natural Science Foundation of China[21978302] ; National Natural Science Foundation of China[21706257] ; National Natural Science Foundation of China[21776292] ; Innovation Academy for Green Manufacture[IAGM2020DB05] ; Major Program of National Natural Science Foundation of China[21890762]
WOS关键词	SALT LAKE BRINE ; SOLVENT-EXTRACTION ; ALKALINE BRINE ; RECOVERY ; SEPARATION ; MECHANISM
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000589830000001
资助机构	National Natural Science Foundation of China ; Innovation Academy for Green Manufacture ; Major Program of National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42646]
专题	中国科学院过程工程研究所
通讯作者	Wang, Junfeng; Zhang, Yanqiang
作者单位	1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing 100049, Peoples R China 2.Zhengzhou Inst Emerging Ind Technol, Zhengzhou 450000, Henan, Peoples R China 3.Shanxi Univ, Inst Resources & Environm Engn, State Environm Protect Key Lab Efficient Utilizat, Taiyuan 030006, Shanxi, Peoples R China 4.Univ Chinese Acad Sci, Sino Danish Coll, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Bai, Ruibing,Wang, Junfeng,Cui, Li,et al. Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids[J]. CHINESE JOURNAL OF CHEMISTRY,2020,38(12):1743-1751.
APA	Bai, Ruibing.,Wang, Junfeng.,Cui, Li.,Yang, Shicheng.,Qian, Wei.,...&Zhang, Yanqiang.(2020).Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids.CHINESE JOURNAL OF CHEMISTRY,38(12),1743-1751.
MLA	Bai, Ruibing,et al."Efficient Extraction of Lithium Ions from High Mg/Li Ratio Brine through the Synergy of TBP and Hydroxyl Functional Ionic Liquids".CHINESE JOURNAL OF CHEMISTRY 38.12(2020):1743-1751.