盐对水+丙酸+环乙醇三相体系在298.2,303.2和308.2K下液液相平衡的影响(英文)

• 作 者: Bahram Ghalami-Choobar Ali Ghanadzadeh Shahram Kousarimehr
• 机 构: Department of Chemistry,Faculty of Science,University of Guilan,
• 出 处: Chinese Journal of Chemical Engineering
• 发表日期: 2011年04期
• 关键词: propionic 三相体系 乙醇 ionic solubility carboxylic potassium purification titration f

Effects of salt and temperature on the liquid phase equilibrium of the(water + propionic acid + cyclohexanol) system were investigated.The liquid-liquid equilibrium data in the presence of KCl for various salt ionic strength of 0.5,1.0,1.5,2.0,and 2.5 mol·dm3 and in absence of the salt at T=(298.2,303.2,and 308.2)K were determined.The experimental results were correlated based on the Othmer-Tobias equation and Pitzer ion-interaction model.Thermodynamic properties such as distribution coefficients and activity coefficients of propionic acid in water + cyclohexanol were determined.In addition,the separation factor,S,of the chosen solvent was obtained for the investigated system.

Effects of salt and temperature on the liquid phase equilibrium of the (water + propionic acid + cyclohexanol) system were investigated. The liquid-liquid equilibrium data in the presence of KCl for various salt ionic strength of 0.5, 1.0, 1.5, 2.0, and 2.5 mol · dm3 and in absence of the salt at T = (298.2, 303.2, and 308.2) K were determined. The experimental results were based on the Othmer-Tobias equation and Pitzer-interaction model. Thermodynamic properties such as distribution coefficients and activity coefficients of propionic acid in water + cyclohexanol were determined. In addition, the separation factor, S, of the chosen solvent was obtained for the investigated system.