Salt Effect on the Liquid-Liquid Equilibrium of(Water+Propionic Acid+Cyclohexanol)System at T=(298.2, 303.2, 308.2)K

›› 2011, Vol. 19 ›› Issue (4): 565-569.

Salt Effect on the Liquid-Liquid Equilibrium of(Water+Propionic Acid+Cyclohexanol)System at T=(298.2, 303.2, 308.2)K

Bahram Ghalami-Choobar, Ali Ghanadzadeh, Shahram Kousarimehr

Department of Chemistry, Faculty of Science, University of Guilan, P. O. Box:19141, Rasht, Iran

收稿日期:2010-08-01 修回日期:2011-04-27 出版日期:2011-08-28 发布日期:2011-08-28
通讯作者: Bahram Ghalami-Choobar,E-mail:B-Ghalami@guilan.ac.ir

Salt Effect on the Liquid-Liquid Equilibrium of(Water+Propionic Acid+Cyclohexanol)System at T=(298.2, 303.2, 308.2)K

Bahram Ghalami-Choobar, Ali Ghanadzadeh, Shahram Kousarimehr

Department of Chemistry, Faculty of Science, University of Guilan, P. O. Box:19141, Rasht, Iran

Received:2010-08-01 Revised:2011-04-27 Online:2011-08-28 Published:2011-08-28

摘要/Abstract

摘要： 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.

关键词: liquid-liquid equilibrium, salt effect, propionic acid, distribution coefficient

Abstract: 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.

Key words: liquid-liquid equilibrium, salt effect, propionic acid, distribution coefficient

Bahram Ghalami-Choobar, Ali Ghanadzadeh, Shahram Kousarimehr. Salt Effect on the Liquid-Liquid Equilibrium of(Water+Propionic Acid+Cyclohexanol)System at T=(298.2, 303.2, 308.2)K[J]. , 2011, 19(4): 565-569.

参考文献

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Salt Effect on the Liquid-Liquid Equilibrium of(Water+Propionic Acid+Cyclohexanol)System at T=(298.2, 303.2, 308.2)K

Salt Effect on the Liquid-Liquid Equilibrium of(Water+Propionic Acid+Cyclohexanol)System at T=(298.2, 303.2, 308.2)K

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