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Role of ionic liquids in the efficient transfer of lithium by Cyanex 923 in solvent extraction system
Cui, Li1,2; Jiang, Kun1; Wang, Junfeng1; Dong, Kun1; Zhang, Xiangping1; Cheng, Fangqin2
2019-08-01
Source PublicationAICHE JOURNAL
ISSN0001-1541
Volume65Issue:8Pages:12
AbstractThe solvent extraction of Li+ by Cyanex 923 was investigated upon the addition of different imidazolium-based ionic liquids (ILs). The results showed 1-hydroxylethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HOEmim][NTf2]) can improve the extraction of Li+ most effectively. The fundamental mechanism is that [HOEmim][NTf2] can remarkably enhance the coordination ability of Cyanex 923 to Li+ to form more stable and hydrophobic ion-pair species [Li(Cyanex 923)(n)][NTf2] (n(max) = 3) resulting from the electrostatic interaction and typical hydrogen bonding of IL, and thus facilitating the transfer of Li+ into organic phase. This work has revealed the transfer mechanism of Li+ in a solvent extraction system comprising of IL and neural ligand. The knowledge of the coordination environment of Li+ in the presence of IL also gives us a new insight into the separation of Li-6/Li-7. The disadvantage of this process is the loss of IL. However, this study provides guidance for the design of better IL-based systems for the separation of metal ions.
Keywordextraction ionic liquids lithium trialkylphosphine oxide
DOI10.1002/aic.16606
Language英语
WOS KeywordSYNERGISTIC EXTRACTION ; CHLORIDE SOLUTIONS ; SEPARATION ; METAL ; ISOTOPES ; CRYSTAL ; PHOSPHATE ; STRATEGY ; RECOVERY
Funding ProjectNational Natural Science Foundation of China[21706257] ; Key Program of National Natural Science Foundation of China[91434203] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-08] ; Shanxi Province Coal Based Low-carbon Technology[MC2016-05] ; Fujian Institute of Innovation, Chinese Academy of Sciences[FJCXY18040101]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Key Program of National Natural Science Foundation of China ; Fund of State Key Laboratory of Multiphase Complex Systems ; Shanxi Province Coal Based Low-carbon Technology ; Fujian Institute of Innovation, Chinese Academy of Sciences
WOS IDWOS:000474620800009
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30212
Collection中国科学院过程工程研究所
Corresponding AuthorCheng, Fangqin
Affiliation1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing, Peoples R China
2.Shanxi Univ, Inst Resources & Environm Engn, State Environm Protect Key Lab Efficient Utilizat, Taiyuan 030006, Shanxi, Peoples R China
Recommended Citation
GB/T 7714
Cui, Li,Jiang, Kun,Wang, Junfeng,et al. Role of ionic liquids in the efficient transfer of lithium by Cyanex 923 in solvent extraction system[J]. AICHE JOURNAL,2019,65(8):12.
APA Cui, Li,Jiang, Kun,Wang, Junfeng,Dong, Kun,Zhang, Xiangping,&Cheng, Fangqin.(2019).Role of ionic liquids in the efficient transfer of lithium by Cyanex 923 in solvent extraction system.AICHE JOURNAL,65(8),12.
MLA Cui, Li,et al."Role of ionic liquids in the efficient transfer of lithium by Cyanex 923 in solvent extraction system".AICHE JOURNAL 65.8(2019):12.
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