Isothermal Vapor-Liquid Equilibrium of Methanol + Glycerol and 1-Propanol + Glycerol

Abstract

Isothermal vapor-liquid equilibrium (VLE) data for two binary mixtures of methanol + glycerol and 1-propanol + glycerol were determined at the temperature range from (313.15 to 363.15) K using a simple quasi-static ebulliometer. All systems showed that the vapor pressures increased with increasing alcohols (methanol or 1-propanol) concentrations at corresponding system. The Wilson, Non-Random Two-Liquid (NRTL) and Universal Quasi-Chemical (UNIQUAC) activity coefficient models were used to correlate the experimental data. Both systems showed slightly deviations from the ideal liquid phase behavior.

Vapor Pressure of 2-Butanol + Diethyl Carbonate and tert-Butanol + Diethyl Carbonate at the Temperature of 303.15–323.15 K

“…The apparatus used in this study is a simple static ebulliometer. The ebulliometer used was an apparatus developed by Oktavian et al and revalidated by Wibawa et al, Wiguno et al, and Anugraha et al to ensure that the initial composition has not changed significantly when the equilibrium condition is achieved. The detailed apparatus was shown in our previous publication .…”

“…Rodriguez et al 10 examined the vapor pressure for the binary systems of diethyl carbonate with five alcohols (methanol, ethanol, 1-propanol, 1-butanol, and 1-pentanol) at a pressure of 101.3 kPa and temperatures of 351.73−396.02 K. Octavian et al 1 measured the vapor pressure of the ethanol + isooctane and 1-butanol + isooctane systems using a new ebulliometer. Ho et al 11 17 Wiguno et al, 18 and Anugraha et al 13 to ensure that the initial composition has not changed significantly when the equilibrium condition is achieved. The detailed apparatus was shown in our previous publication.…”

Measurement and Correlation of Isothermal Binary Vapor–Liquid Equilibrium for Diethyl Carbonate + Isooctane/n-Heptane/Toluene Systems

“…The main apparatus consists of a 170 mL ebulliometer cell, vacuum pump with ultimate vacuum pressure of 5 Pa absolute, U shape mercury manometer to measure the equilibrium pressure with an accuracy of 0.5 mmHg, giving an uncertainty of 0.3 kPa. The temperature in the ebulliometer cell was measured with a four-wire platinum resistance temperature detector as a temperature sensor and recorded by a YOKOGAWA 7563 instrument to measure the equilibrium temperature with an uncertainty of 0.03 K. The schematic diagram and reliability of the experimental apparatus and method were described in detail in our previous works. − …”

Experimental and Predicted Values of Bubble Point Pressure for Binary and Ternary Systems Consisting of 1-Butanol, 2-Methyl-1-propanol, Glycerol, and Water

“…Many binary vapor–liquid equilibrium (VLE) data for systems containing alcohol + glycerol have been published, such as isobaric VLE data of (methanol, ethanol, or 1-propanol) + glycerol systems at various pressures measured by Soujanya et al, Coelho et al, Veneral et al., and Batutah et al; isobaric VLE data of (methanol, ethanol, 1-propanol, 2-propanol or 1-butanol) + glycerol mixtures at atmospheric pressure reported by Oliveira et al; and isothermal VLE data of ethanol + glycerol systems measured by Zaoui-Djelloul-Daouadji et al Moreover, isothermal VLE data of (methanol, ethanol, 1-propanol, or 2-propanol) + glycerol at different temperatures were reported in our previous work. , For ternary systems involving alcohol, glycerol, and water, the VLE data for those mixtures were reported in previous studies. ,− …”