Extraction Equilibria of Lithium with Tributyl Phosphate, Diisobutyl Ketone, Acetophenone, Methyl Isobutyl Ketone, and 2-Heptanone in Kerosene and FeCl3

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• 作者：Zhiyong Zhou ; Shengke Liang ; Wei Qin ; Weiyang Fei
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：June 12, 2013
• 年：2013
• 卷：52
• 期：23
• 页码：7912-7917
• 全文大小：303K
• 年卷期：v.52,no.23(June 12, 2013)
• ISSN：1520-5045

文摘

The extraction equilibrium behavior of Li by tributyl phosphate (TBP), diisobutyl ketone, acetophenone, methyl isobutyl ketone, and 2-heptanone in kerosene were investigated. The partition coefficient of Li with TBP in kerosene decreased significantly when the volume concentration of TBP was greater than 60%. The values derived for the partition coefficients of four selected ketones in kerosene were smaller than that of TBP in kerosene. The stoichiometric coefficients between TBP and Li, the stoichiometric coefficients between the four selected ketones and Li, and the apparent equilibrium constant for the extraction reaction equation for TBP and the four ketones in kerosene were obtained. The tendency in extraction with the TBP and four selected ketones in kerosene can be predicted from these parameters. The polar solvents used as diluents for TBP can yield higher Li partition coefficients, strong dilution effects for TBP, and strong polarity and low density of the extracting solvents formed with both polar solvents and TBP.