Thermodynamics of mixtures containing ethers PART II: Isothermal x– y data for the ternary system MTBE + methanol + 1-butanol and for two constituent binaries: DISQUAC predictions on VLE of ternary mixtures containing tertiary-alkyl ethers and organic solvents

Abstract

VLE data at 298.15 K ( x– y measurements, where x and y are the mole fractions in liquid and vapor phase, respectively) for methanol or 1-butanol+methyl tert-butyl ether (MTBE) and for MTBE+methanol+1-butanol systems are reported. These data and those available on literature on VLE at isothermal conditions for ternary systems containing tertiary-alkyl ethers (MTBE, tert-amyl methyl ether (TAME)) and organic solvents (hydrocarbons and 1-alkanols) are analyzed in terms of DISQUAC. The model correctly predicts VLE of this type of mixtures using binary parameters only, i.e. neglecting ternary interactions. Results are independent of the mixture considered.