Isobaric Vapor–liquid Equilibrium for Three Binary Systems of Ethyl Acetate + Propyl Acetate, Ethyl Acetate + Propylene Carbonate, and Propyl Acetate + Propylene Carbonate at 101.3 kPa

Abstract

In this work, the isobaric vapor−liquid equilibrium (VLE) data for ethyl acetate + propyl acetate, ethyl acetate + propylene carbonate, and propyl acetate + propylene carbonate systems were measured at a pressure of 101.3 kPa by a modified Rose vapor recirculating-type equilibrium still. The experimental results show that no azeotrope was detected between the three binary systems. Two thermodynamic consistency tests of Herington and van Ness were employed to check the experimental data, respectively. The measured VLE data were correlated by Wilson, universal quasichemical, and nonrandom two-liquid models. The calculated root-mean-square deviation values of the equilibrium temperature and vapor phase mole fractions are not more than 1.07 and 0.0113, respectively. The relative volatilities were calculated and the deviations between the experimental data and Wilson model calculations were compared. All the correlated results are in good agreement with the measured data. Meanwhile, the binary interaction parameters were regressed by the three models for all the binary systems.

Reply to “Comments on ‘Isobaric Vapor + Liquid Equilibrium Measurements and Calculations for Using Nontraditional Models for the Association Systems of Ethyl Acetate +2-Ethylhexanoic Acid and Propyl Acetate +2-Ethylhexanoic Acid at Atmospheric Pressure’″

“…This is almost the same as the experimental instruments and procedures used in the references, − which also shows the rationality of the experimental method.…”

Isobaric Vapor–Liquid Equilibria of Binary Mixtures of Diethyl Carbonate with Methyl Acetate, n-Propyl Acetate, or Amyl Acetate at 100.17 kPa

“…The modified Rose–Williams still could provide sufficient, continuous contact between the vapor and liquid phases, and the system quickly reached equilibrium. The system vacuum conditions are controlled using a vacuum pump, pressure control valves, and a U-shape differential manometer.…”

Vapor–Liquid Equilibrium Study of Binary Mixtures of Chloroform, 2-Ethylhexanoic Acid, and Propylene Glycol Methyl Ether at Atmospheric Pressure

“…No additional purification step was implemented before the experiment. The measurement of boiling temperature ( T b ) for chloroform, 2-EA, and PM was performed in a modified Rose vapor recirculating-type equilibrium still . The component was heated to boiling, and then the boiling temperature was measured with a precision mercury thermometer (by Tianjin Glass Instrument Factory).…”