Open AccessLiquid/liquid equilibrium data measurement of iso-butanol + diethyl carbonate + water ternary system at 303.15 - 313.15 K and atmospheric pressure
Author(s) -
Rizky Tetrisyanda,
Annas Wiguno,
Kuswandi Kuswandi,
Gede Wibawa
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1053/1/012138
Subject(s) - uniquac , non random two liquid model , chemistry , gasoline , diethyl carbonate , ternary operation , butanol , oxygenate , diesel fuel , diethyl ether , atmospheric pressure , analytical chemistry (journal) , octane , combustion , ternary numeral system , thermodynamics , activity coefficient , organic chemistry , ethanol , ethylene carbonate , physics , electrode , computer science , electrolyte , programming language , oceanography , phase (matter) , aqueous solution , geology , catalysis
Oxygenate compounds are organic compounds that can be mixed into fuel to increase the oxygen content. The effect of these additions to the fuel is increased combustion efficiency and reduced environmental pollution. Diethyl carbonate (DEC) is an ideal additive to replace toxic fuel additives such as methyl-tertiary-butyl ether (MTBE). DEC has high oxygen content, low vapour pressure, high octane mixture value, reduces emissions of hydrocarbons, CO, NO x , and other particles. DEC can be used as a single additive in gasoline or a co-additive in combination with alcohol such as iso-butanol. The aim of this study were to obtain liquid-liquid equilibrium (LLE) data of DEC (1) + iso-butanol (2) + H 2 O (3) ternary system at temperature of 303.15 - 313.15 K and atmospheric pressure. The LLE data were obtained by experiment using equilibrium cell equipped with heating jacket. This equipment has a pressure deviation of ± 100.72 kPa. Each liquid sample was taken separately to analyse its composition as an equilibrium composition using gas chromatography with a standard deviation of 0.1% mol. Based on LLE data result, it shows that iso-butanol + H 2 O and DEC + H 2 O binary mixtures are partially miscible while iso-butanol + DEC mixture is total miscible. The experimental data were then correlated with thermodynamic models Non-Random Two-Liquid (NRTL) and Universal Quasi-Chemical (UNIQUAC) equations with RMSD values of 0.72% and 0.62%.