Prediction of Solid−Liquid Phase Equilibrium in the System of Water (1) + Alcohols (2) + MgSO4·7H2O (3) + MnSO4·H2O (4) by the Ion-Specific

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• 作者：Kouji Maeda*^‡ ; ; Parviz Safaeefar^§ ; ; Ha-Ming Ang^§ ; ; Hidetoshi Kuramochi ; Yusuke Asakuma^‡ ; ; Moses O. Tade^§ ; ; Keisuk
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2009
• 出版时间：February 12, 2009
• 年：2009
• 卷：54
• 期：2
• 页码：423-427
• 全文大小：238K
• 年卷期：v.54,no.2(February 12, 2009)
• ISSN：1520-5134

文摘

The complex phase equilibria for the solubilities of MnSO₄·H₂O and MgSO₄·7H₂O in three different organic solvents (methanol, ethanol, and 2-propanol) were predicted by the ion-specific electrolyte NRTL model. The salting-out effect of Mg²⁺, solventing-out effects of alcohols, and their combined effects on the solubility of MnSO₄·H₂O were represented in several thermodynamic figures as a function of temperature. We found that the solventing-out effect was stronger than the salting-out effect for the solubility of MnSO₄·H₂O even though the solubility of MnSO₄·H₂O decreased as temperature increased.