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The Key Factors and Mechanism Study on Lithium Extraction by TBP-FeCl3 extraction system
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2020-07-04 , DOI: 10.1016/j.cplett.2020.137740
Hui-fang Li , Li-juan Li , Wu Li , Yong-quan Zhou

The key factors and mechanism of lithium extraction using tributyl phosphate(TBP) as extractant, kerosene as diluent, and FeCl3 as co-extractant were investigated. The theoretical Raman spectra of FeCl3 and FeCl4- were calculated by DFT. The key factors MgCl2, FeCl3 and TBP were studied. The results suggested the increase of MgCl2 concentration was conducive to extraction lithium and the influence of Cl- was greater than Mg2+. Fe3+ and Cl- were the optimal central ions and ligands for the formation of monovalent anions. The concentration of TBP should not too much for improving the separation effect of Li+ and Mg2+.



中文翻译:

TBP-FeCl 3萃取系统萃取锂的关键因素及机理研究

研究了磷酸三丁酯(TBP)作为萃取剂,煤油作为稀释剂,FeCl 3作为共萃取剂萃取锂的关键因素和机理。的FeCl的理论拉曼光谱3和的FeCl 4 - ,通过DFT计算。研究了关键因素MgCl 2,FeCl 3和TBP。结果表明氯化镁的增加2浓度有利于提取锂和Cl的影响-为除Mg更大2+。铁3+和Cl -是形成一价阴离子的最佳中心离子和配体。为了提高Li +和Mg 2+的分离效果,TBP的浓度不应太高。

更新日期:2020-07-06
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