Solubility and dissolution thermodynamics of hexaquoiron(III)tris(p-toluenesulfonate) in (ethanol+water) binary mixtures within 291.15–333.15 K

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• 作者：Zhijuan Huang ; Chao Yu ; Weilan Xue ; Fucong Lin…
• 关键词：Hexaquoiron(III)tris(p ; toluenesulfonate) ; Thermodynamics ; Correlation ; Solubility ; Phase Equilibria
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：34
• 期：1
• 页码：206-213
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Industrial Chemistry/Chemical Engineering; Catalysis; Materials Science, general; Biotechnology;
• 出版者：Springer US
• ISSN：1975-7220
• 卷排序：34

文摘

The solubility of hexaquoiron(III)tris(p-toluenesulfonate) [Fe(OTs)₃·6H₂O] in (ethanol+water) mixtures with a mole fraction of 0–0.327 ethanol was measured from 291.15 to 333.15 K by using a synthetic method. The experimental results show that the solubility of Fe(OTs)₃·6H₂O increases with an increase in temperature and an enrichment in ethanol content. The solubility data were correlated by the modified Apelblat equation, the Redlich-Kister (CNIBS/R-K) model, and the hybrid model, and the results showed that the three models agree well with experimental data. The thermodynamic properties of the dissolution process, including enthalpy, entropy, and Gibbs energy were estimated from the experimental data by the modified van’t Hoff equation, indicating that the process of the dissolution of Fe(OTs)₃·6H₂O is endothermic and spontaneous.