(Vapour+liquid) equilibrium and excess Gibbs functions of ternary mixtures containing 1-butanol or 2-butanol, n-hexane, and 1-chlorobutane at T=298.15K

Isothermal Vapor−Liquid Equilibrium of Ternary Mixtures Containing 2-Methyl-1-propanol or 2-Methyl-2-propanol, n-Hexane, and 1-Chlorobutane at 298.15 K

“…The vapor pressure−liquid composition surface calculated with the Wilson equation for the two ternary systems is represented in Figures and , respectively. These figures and our previous studies show that p varies with liquid composition in a very similar way for the four ternary systems containing a butanol isomer + n -hexane + 1-chlorobutane: vapor pressure continuously diminishes when the mole fraction of butanol isomer increases in the mixture.…”

“…The G E −liquid composition surfaces obtained with the Wilson equation for both ternary systems have been plotted in Figures and , respectively. In these figures, we can observe that the G E dependence with liquid composition is also very similar for the ternary systems containing a butanol isomer + n -hexane + 1-chlorobutane: G E values are positive and high in the full composition range, following the sequence 2-methyl-2-propanol < 2-butanol ≈ 1-butanol < 2-methyl-1-propanol. In previous papers, we have reported thermodynamic and transport properties such as excess molar volumes, refractive index, and viscosity deviations for all the ternary systems.…”

“…In the past years, our laboratory has been involved in the study of several thermodynamic and transport properties of the ternary mixtures containing an isomer of butanol + n -hexane + 1-chlorobutane, − and we also have recently reported isothermal VLE data for the ternary systems 1-butanol or 2-butanol + n -hexane + 1-chlorobutane at 298.15 K . To complete this systematic study, we report here vapor−liquid equilibrium data obtained at 298.15 K for the ternary systems 2-methyl-1-propanol or 2-methyl-2-propanol + n -hexane + 1-chlorobutane and for the binary mixtures 2-methyl-1-propanol or 2-methyl-2-propanol + n -hexane.…”

Surface Tensions of the Ternary Mixtures Containing an Isomeric Butanol + n-Hexane + 1-Chlorobutane at 298.15 K

“…Nevertheless, favorable interactions among the components of the mixture can counterbalance the migration to the surface of the more active components. If we take into account the bulk behavior of the four ternary systems, which all show G E positive values, 9,10 we can infer that the new interactions, formed in the mixing process between molecules of butanol and chlorobutane, cannot compensate the weakening of the self-interactions; therefore the above-mentioned surface migration is only partially prevented.…”

“…Systematic investigations on surface tension of multicomponent systems are rather unusual. – In the last years our group has been involved in the study of different thermodynamic and transport properties of the ternary mixtures containing an isomer of butanol + n -hexane + 1-chlorobutane. – Following our systematic studies we report here surface tension measurements for these ternary systems at 298.15 K. Surface tension deviations have been calculated from experimental surface tensions and fitted by the Cibulka’s equation. Apart from this experimental work we have verified the accuracy in the prediction of surface tensions of a group-contribution method, , and on the other hand we have calculated using this method the excess surface molar compositions of n -hexane in the ternary mixtures.…”