Vapor–liquid equilibria and excess properties for methyl tert-butyl ether (MTBE) containing binary systems

Methyl tert-butyl ether (MTBE) is recently widely used in the chemical and petrochemical industry as a non-polluting octane booster for gasoline and as an organic solvent. The isobaric or isothermal vapor–liquid equilibria (VLE) were determined directly for MTBE+C1–C4 alcohols. The excess enthalpy (HE) for butane+MTBE or isobutene+MTBE and excess volume (VE) for MTBE+C3–C4 alcohols were also determined. Besides, the infinite dilute activity coefficient, partial molar excess enthalpies and volumes at infinite dilution (γ∞, HE,∞, VE,∞) were calculated from measured data. Each experimental data were correlated with various gE models or empirical polynomial.