Isobaric vapor–liquid and vapor–liquid–liquid equilibrium data for the system water + ethanol + cyclohexane

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• 作者：V. Gomis ; A. Font ; R. Pedraza and M.D. Saquete
• 关键词：Water ; Ethanol ; Cyclohexane ; Vapor– ; liquid– ; liquid equilibrium ; Experimental data
• 刊名：Fluid Phase Equilibria
• 出版年：2005
• 期刊代码：32_03783812
• 类别：ce
• 出版时间：2005
• 卷：235
• 期：1
• 页码：7-10
• 文件大小：150 K

摘要

Isobaric vapor–liquid (VLE) and vapor–liquid–liquid equilibria (VLLE) were measured for the ternary system water + ethanol + cyclohexane at 101.3 kPa. The experimental determination was carried out in a dynamic equilibrium still with circulation of both the vapor and liquid phases, equipped with an ultrasonic homogenizer. The experimental data demonstrated the existence of a ternary heterogeneous azeotrope at 335.6 K with a composition of 0.188, 0.292, 0.520 mole fraction of water, ethanol and cyclohexane, respectively. The experimental data were compared with those obtained using UNIFAC and NRTL models with parameters taken from literature.