SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (5): 1149-1158.DOI: 10.1016/j.cjche.2018.11.005

• Chemical Engineering Thermodynamics • 上一篇    下一篇

Determination and correlation solubility of m-phenylenediamine in (methanol, ethanol, acetonitrile and water) and their binary solvents from 278.15 K to 313.15 K

Pengbao Lian1, Huipeng Zhao1, Jianlong Wang1, Lizhen Chen1, Yong Xiang2, Qinghua Ren2   

  1. 1 School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China;
    2 Sichuan North Hongguang Special Chemical Co., Ltd., Yibin 644100, China
  • 收稿日期:2018-05-09 修回日期:2018-11-08 出版日期:2019-05-28 发布日期:2019-06-27
  • 通讯作者: Lizhen Chen
  • 基金资助:
    This work was financially supported by the North Chemical Group Youth Science and Technology Innovation Foundation of China (QKCZ201627)..

Determination and correlation solubility of m-phenylenediamine in (methanol, ethanol, acetonitrile and water) and their binary solvents from 278.15 K to 313.15 K

Pengbao Lian1, Huipeng Zhao1, Jianlong Wang1, Lizhen Chen1, Yong Xiang2, Qinghua Ren2   

  1. 1 School of Chemical Engineering and Technology, North University of China, Taiyuan 030051, China;
    2 Sichuan North Hongguang Special Chemical Co., Ltd., Yibin 644100, China
  • Received:2018-05-09 Revised:2018-11-08 Online:2019-05-28 Published:2019-06-27
  • Contact: Lizhen Chen
  • Supported by:
    This work was financially supported by the North Chemical Group Youth Science and Technology Innovation Foundation of China (QKCZ201627)..

摘要: In this study, the solubility of m-phenylenediamine in four pure solvents (methanol, ethanol, acetonitrile and water) and three binary solvent (methanol + water), (ethanol + water) and (acetonitrile + water) systems were determined in the temperature ranging from 278.15 K to 313.15 K by using the gravimetric method under atmospheric pressure. In the temperature range of 278.15 K to 313.15 K, the mole fraction solubility values of m-phenylenediamine in water, methanol, ethanol, and acetonitrile are 0.0093-0.1533, 0.1668-0.5589, 0.1072-0.5356, and 0.1717-0.6438, respectively. At constant temperature and solvent composition, the mole fraction solubility of o-phenylenediamine in four pure solvents was increased as the following order:water < ethanol < methanol < acetonitrile; and in the three binary solvent mixtures could be ranked as follows:(ethanol + water) < (methanol + water) < (acetonitrile + water). The relationship between the experimental temperature and the solubility of m-phenylenediamine was revealed as follows:the solubility of mphenylenediamine in pure and binary solvents could be increased with the increase of temperature. The experimental values were correlated with the Jouyban-Acree model, van't Hoff-Jouyban-Acree model, modified Apelblat-Jouyban-Acree model, Sun model and Ma model. The standard dissolution enthalpy, standard dissolution entropy and the Gibbs energy were calculated based on the experimental solubility data. In the binary solvent mixtures, the dissolution of m-phenylenediamine could be an endothermic process. The solubility data, correlation equations and thermodynamic property obtained from this study would be invoked as basic data and models regarding the purification and crystallization process of m-phenylenediamine.

关键词: m-Phenylenediamine, Solubility, Solid-liquid equilibrium, Jouyban-Acree model, Thermodynamic property

Abstract: In this study, the solubility of m-phenylenediamine in four pure solvents (methanol, ethanol, acetonitrile and water) and three binary solvent (methanol + water), (ethanol + water) and (acetonitrile + water) systems were determined in the temperature ranging from 278.15 K to 313.15 K by using the gravimetric method under atmospheric pressure. In the temperature range of 278.15 K to 313.15 K, the mole fraction solubility values of m-phenylenediamine in water, methanol, ethanol, and acetonitrile are 0.0093-0.1533, 0.1668-0.5589, 0.1072-0.5356, and 0.1717-0.6438, respectively. At constant temperature and solvent composition, the mole fraction solubility of o-phenylenediamine in four pure solvents was increased as the following order:water < ethanol < methanol < acetonitrile; and in the three binary solvent mixtures could be ranked as follows:(ethanol + water) < (methanol + water) < (acetonitrile + water). The relationship between the experimental temperature and the solubility of m-phenylenediamine was revealed as follows:the solubility of mphenylenediamine in pure and binary solvents could be increased with the increase of temperature. The experimental values were correlated with the Jouyban-Acree model, van't Hoff-Jouyban-Acree model, modified Apelblat-Jouyban-Acree model, Sun model and Ma model. The standard dissolution enthalpy, standard dissolution entropy and the Gibbs energy were calculated based on the experimental solubility data. In the binary solvent mixtures, the dissolution of m-phenylenediamine could be an endothermic process. The solubility data, correlation equations and thermodynamic property obtained from this study would be invoked as basic data and models regarding the purification and crystallization process of m-phenylenediamine.

Key words: m-Phenylenediamine, Solubility, Solid-liquid equilibrium, Jouyban-Acree model, Thermodynamic property