Measurement and correlation of the solubility of caffeic acid in eight mono and water + ethanol mixed solvents at temperatures from (293.15 to 333.15) K

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• 作者：Wenqin Ji ; Qingqing Meng ; Lei Ding ; Fang Wang ; Jiejie Dong ; Guangyi Zhou ; Baohua Wang ; ^{wbaohua1@163.com}
• 关键词：Caffeic acid ; Solubility ; Correlation ; Thermodynamic properties
• 刊名：Journal of Molecular Liquids
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：224
• 期：part_PB
• 页码：1275-1281
• 全文大小：528 K
• 卷排序：224

文摘

The solubility of caffeic acid in mono solvents including methanol, ethanol, 1-propanol, 2-propanol, n-butanol, isobutanol, acetone, ethyl acetate and binary mixtures (water + methanol) were experimentally measured from T = (283.15 to 333.15) K by the gravimetric method. The experimental results show that values obtained increased with temperature increasing from (283.15 to 333.15) K. Good agreement was found between the experiments and calculations by the modified Apelblat equation, van't Hoff equation, λh equation. Furthermore, thermodynamic properties of dissolution of the caffeic acid in the selected solvents were estimated. Consequently, the experimental data and model parameters would be useful for optimizing the process of purification of caffeic acid in industry.