Phase Diagram of [Amim]Cl + Salt Aqueous Biphasic Systems and Its Application for [Amim]Cl Recovery

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• 作者：Yuefeng Deng ; Tao Long ; Dongli Zhang ; Ji Chen ; Shucai Gan
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2009
• 出版时间：September 10, 2009
• 年：2009
• 卷：54
• 期：9
• 页码：2470-2473
• 全文大小：113K
• 年卷期：v.54,no.9(September 10, 2009)
• ISSN：1520-5134

文摘

In this study, binodal curves and tie line data of [Amim]Cl + salt (K₃PO₄, K₂HPO₄, K₂CO₃) + water aqueous biphasic systems (ABS) were measured and correlated satisfactorily with the Merchuk equation and Othmer−Tobias and Bancroft equations, respectively. [Amim]Cl could be recovered from aqueous solutions using the ABS, and the recovery efficiency could reach 96.80 %. The recovery efficiency was influenced by the concentrations of the salts and their Homeister series: K₃PO₄ > K₂HPO₄ > K₂CO₃. Our method provides a new and effective route for the recovery of hydrophilic IL using [Amim]Cl + salt + water ABS from aqueous solutions.