Measurement and correlation of the solubility of maleic acid in acetone-ethyl acetate mixtures

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• 作者：Yonghong Hu^a ; Lulu Wang^a ; Zhongbin Meng^a ; Wenge Yang^b ; ^{chemywg@126.com}
• 关键词：Maleic acid ; Solubility ; Solid&ndash ; liquid equilibrium ; Apelblat equation ; Buchowski&ndash ; Ksiazczak 位h equation
• 刊名：Thermochimica Acta
• 出版年：2012
• 期刊代码：110_00406031
• 类别：ch
• 出版时间：20 June, 2012
• 卷：538
• 期：Complete
• 页码：75-78
• 文件大小：270 K

摘要

In this paper, the solubilities of maleic acid in different compositions of acetone-ethyl acetate mixtures were measured at the temperature range from 285.15 K to 324.25 K under atmospheric pressure by the gravimetric method. These data were correlated with Apelblat equation and Buchowski-Ksiazczak 位h equation. Both equations provided an accurate mathematical representation of the experimental results. The root-mean-square deviations (rmsds) of the Apelblat equation were lower than those of 位h equation, which indicated that the Apelblat equation could regress the solubility data much better than the 位h equation for this system. This study provided valuable data not only for optimizing the process of purification of maleic acid in industry but also for further theoretical studies.