A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl3

›› 2012, Vol. 20 ›› Issue (1): 36-39.

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A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl₃

ZHOU Zhiyong, QIN Wei, FEI Weiyangm, LI Yigui

State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2011-07-26 Revised:2011-09-27 Online:2012-05-03 Published:2012-02-28
Supported by:
Supported by the National High Technology Research and Development Program of China (2008AA06Z111);the Qinghai Key Technology R&D Program (2011-J-154)

A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl₃

周智勇, 秦炜, 费维扬, 李以圭

State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

通讯作者: QIN Wei,E-mail:qinwei@tsinghua.edu.cn
基金资助:
Supported by the National High Technology Research and Development Program of China (2008AA06Z111);the Qinghai Key Technology R&D Program (2011-J-154)

Abstract

Abstract: To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources,the complexes formed from tributyl phosphate(TBP) and methyl isobutyl ketone(MIBK) with lithium were investigated using FeCl₃ as coextracting agent.Liquid-liquid extraction reaction mechanisms were proposed and the stoichiometry of tetrachloroferrate(Ⅲ) complex with lithium was obtained by regressing the experimental data.It is found that the stoichiometry of tetrachloroferrate(Ⅲ) to lithium in the complex is 1:1 with either TBP or MIBK as extractant in kerosene.The stoichiometry of the complex of TBP with Li was 1:1 and that of MIBK with Li was 2:1.The formed complexes of TBP and MIBK with lithium are determined to be LiFeCl₄·TBP and LiFeCl₄·2MIBK,respectively,according to the rule of neutralization.

Key words: lithium, extraction reaction equations, formation, tributyl phosphate, methyl isobutyl ketone, kerosene

摘要： To study the characteristic of liquid-liquid extraction equilibrium of lithium from brine sources,the complexes formed from tributyl phosphate(TBP) and methyl isobutyl ketone(MIBK) with lithium were investigated using FeCl₃ as coextracting agent.Liquid-liquid extraction reaction mechanisms were proposed and the stoichiometry of tetrachloroferrate(Ⅲ) complex with lithium was obtained by regressing the experimental data.It is found that the stoichiometry of tetrachloroferrate(Ⅲ) to lithium in the complex is 1:1 with either TBP or MIBK as extractant in kerosene.The stoichiometry of the complex of TBP with Li was 1:1 and that of MIBK with Li was 2:1.The formed complexes of TBP and MIBK with lithium are determined to be LiFeCl₄·TBP and LiFeCl₄·2MIBK,respectively,according to the rule of neutralization.

关键词: lithium, extraction reaction equations, formation, tributyl phosphate, methyl isobutyl ketone, kerosene

CLC Number:

TQ028.32

ZHOU Zhiyong, QIN Wei, FEI Weiyangm, LI Yigui. A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl₃[J]. , 2012, 20(1): 36-39.

周智勇, 秦炜, 费维扬, 李以圭. A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl₃[J]. , 2012, 20(1): 36-39.

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A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl₃

A Study on Stoichiometry of Complexes of Tributyl Phosphate and Methyl Isobutyl Ketone with Lithium in the Presence of FeCl₃

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