Alexandru Barhala

Vapour pressures and excess Gibbs energy of propane-2-one+chloroalkanes binary mixtures

Total vapour pressures have been measured for binary mixtures of propane-2-one with 1-chloropentane (I), 1,3-dichloropropane (II), and 1,1,1-trichloroethane (III), at 298.15, 303.15, 308.15 and 313.15 K, by a static method. The data were reduced using Barkers method and different expressions for excess Gibbs energy were tested. The results evidenced positive (for (I) and (III) mixtures) and negative (for (II) mixture) deviations from ideality.

Isothermal vapour–liquid equilibrium data for the binary propan-2-one+chloroalkanes mixtures at temperatures from 298.15 K to 313.15 K

Abstract Isothermal vapour–liquid equilibrium data are reported for binary mixtures of propan-2-one with 1,1,2,2-tetrachloroethane (I) and 1,4-dichlorobutane (II) within the 298.15–313.15 K temperature range. Total vapour pressures were measured by a static method, the mixtures beeing prepared by weight and degased directly into the working cell. The experimental data were correlated by Barkers method and different expressions for excess Gibbs energy were tested. The results indicate negative deviation from ideality for mixture (I), while mixture (II) behaves almost ideally, with slightly positive deviations.

Vapour pressures and excess Gibbs energy of ethylbenzene-cyclooctane binary mixtures

Abstract Isothermal vapour-liquid equilibrium data at 343.15, 353.15 and 373.15 K for ethylbenzene + cyclooctane mixtures are reported. Use has been made of an ebullioneter which allowed sampling from both phases in equilibrium. Different G E expressions suitable for correlation of these data were tested. The results evidenced a positive deviation from ideality of the system.