Solubility and partition coefficient of p-toluic acid in p-xylene and water

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• 作者：Qingran Kong ; Youwei Cheng ; ^{ywcheng@zju.edu.cn} ; Xiuxiu Bao ; Lijun Wang ; Xi Li
• 关键词：Solubility ; Partition coefficient ; p-Toluic acid ; p-Xylene
• 刊名：Fluid Phase Equilibria
• 出版年：2013
• 出版时间：25 February, 2013
• 年：2013
• 卷：340
• 期：Complete
• 页码：46-51
• 全文大小：357 K

文摘

The solubility and partition coefficient of p-toluic acid in p-xylene and water at ambient pressure were measured over the temperature range of 303.2-353.2 K. The measured solubility data and partition coefficient data were well correlated by the NRTL equation. The well-documented p-toluic acid-water system was used to validate the reliability of the sampling and analytical techniques employed. The results showed that the solubility of p-toluic acid in p-xylene and water increases with the temperature increase. The partition coefficient of p-toluic acid between p-xylene and water increases with the increasing initial mass of p-toluic acid, but decreases with the rising temperature. The equilibrium data of the ternary system are essential for the extraction process design and scale-up in the PTA wastewater recovery and treatment.