Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures

doi:10.1016/S1004-9541(13)60520-0

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (7): 754-758.DOI: 10.1016/S1004-9541(13)60520-0

Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures

成有为, 霍磊, 李希

Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China

收稿日期:2012-04-09 修回日期:2012-09-20 出版日期:2013-07-28 发布日期:2013-08-24
通讯作者: CHENG Youwei
基金资助:
Supported by the Natural Science Foundation of Zhejiang Province, China (Z4100351) and the Fundamental Research Funds for the Central Universities (2013QNA4035).

Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures

CHENG Youwei, HUO Lei, LI Xi

Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China

Received:2012-04-09 Revised:2012-09-20 Online:2013-07-28 Published:2013-08-24
Supported by:
Supported by the Natural Science Foundation of Zhejiang Province, China (Z4100351) and the Fundamental Research Funds for the Central Universities (2013QNA4035).

摘要/Abstract

摘要： The solubilities of isophthalic acid (1) in binary acetic acid (2)+water (3) solvent mixtures were determined in a pressurized vessel. The temperature range was from 373.2 to 473.2K and the range of the mole fraction of acetic acid in the solvent mixtures was from x₂ 0 to 1. A new method to measure the solubility was developed, which solved the problem of sampling at high temperature. The experimental results indicated that within the temperature range studied, the solubilities of isophthalic acid in all mixtures showed an increasing trend with increasing temperature. The experimental solubilities were correlated by the Buchowski equation, and the calculate results showed good agreement with the experimental solubilities. Furthermore, the mixed solvent systems were found to exhibit a maximum solubility effect on the solubility, which may be attributed to the intermolecular association between the solute and the solvent mixture. The maximum solubility effect was well modeled by the modified Wilson equation.

关键词: solubility, isophthalic acid, acetic acid, water, solid-liquid equilibrium

Abstract: The solubilities of isophthalic acid (1) in binary acetic acid (2)+water (3) solvent mixtures were determined in a pressurized vessel. The temperature range was from 373.2 to 473.2K and the range of the mole fraction of acetic acid in the solvent mixtures was from x₂ 0 to 1. A new method to measure the solubility was developed, which solved the problem of sampling at high temperature. The experimental results indicated that within the temperature range studied, the solubilities of isophthalic acid in all mixtures showed an increasing trend with increasing temperature. The experimental solubilities were correlated by the Buchowski equation, and the calculate results showed good agreement with the experimental solubilities. Furthermore, the mixed solvent systems were found to exhibit a maximum solubility effect on the solubility, which may be attributed to the intermolecular association between the solute and the solvent mixture. The maximum solubility effect was well modeled by the modified Wilson equation.

Key words: solubility, isophthalic acid, acetic acid, water, solid-liquid equilibrium

成有为, 霍磊, 李希. Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures[J]. Chinese Journal of Chemical Engineering, 2013, 21(7): 754-758.

CHENG Youwei, HUO Lei, LI Xi . Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures[J]. Chin.J.Chem.Eng., 2013, 21(7): 754-758.

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Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures

Solubilities of Isophthalic Acid in Acetic Acid+Water Solvent Mixtures

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