In this work, the solubility of carbon dioxide, CO2, in pentaerythritol tetrapentanoate (PEC5) and in pentaerythritol tetra(2- ethylhexanoate) (PEBE8) has been performed from (283 to 333) K and pressures up to 7 MPa in a new high-pressure gas solubility apparatus. The results show that in the present analyzed range CO2 is highly soluble in these oils and that the solubility expressed as CO2 mole fraction is practically not dependent on the branching

The vapour pressures of the binary systems 1,2-dichloroethane + cyclohexanone, chloroform + cyclopentanone and chloroform + cyclohexanone mixtures were measured at temperatures between 298.15 and 318.15 K. The vapour pressures vs. liquid phase composition data for three isotherms have been used to calculate the activity coefficients of the two components and the excess molar Gibbs energies, GE, for these mixtures, using Barker’s method. Redlich–Kister,

The data available in the literature and our recent data on vapour–liquid equilibrium (VLE), excess Gibbs energy, GE, and excess enthalpy, HE, for the homologous series of cyclopentanone + chloroalkane mixtures are examined in terms of the predictive group contribution models. DISQUAC and UNIFAC. In our treatment, we present also how the structural effects and different types of molecular interactions are reflected by the thermodynamic excess properties

The vapour pressures of binary (cyclopentanone + 1-chlorobutane, +1,3-dichloropropane, and +1,4- dichlorobutane) mixtures, were measured at the temperatures of (298.15, 308.15, and 318.15) K. The vapour pressures vs. liquid phase composition data have been used to calculate the excess molar Gibbs free energies GE of the investigated systems, using Barker’s method. Redlich–Kister, Wilson and NRTL equations, taking into account the vapor phase

The data available in the literature and our recent data on vapour–liquid equilibrium (VLE), excess Gibbs energy, GE and excess enthalpy, HE for two homologous series of organic mixtures, namely cycloalkane + n-alkylbenzene and linear ketone + chloroalkane mixtures are examined in terms of the DISQUAC group contribution model. The sets of structure-dependent DISQUAC parameters obtained by us were used to calculate the excess thermodynamic properties

The vapour pressure of pure components and isothermal (vapour + liquid) equilibrium data at temperatures of (343.15, 353.15, and 363.15) K for binary mixtures containing (cyclopentanone or cyclohexanone with 1,1,2,2-tetrachloroethane) are reported. Use has been made of an ebulliometer which allowed sampling from both phases in equilibrium. Both systems exhibit azeotrope with minimum pressure at all three temperatures. The experimental data were correlated

The vapour pressures of pure components and two binary mixtures of (cyclopentanone + 1,2-dichloroethane and + 1,1,1-trichloroethane) were measured at temperatures between 298.15 K and 313.15 K. The vapour pressures vs. liquid phase composition data have been used to calculate the activity coefficients and the excess molar Gibbs free energies GEm for the mixtures using the maximum likelihood method applied to the Redlich–Kister, Wilson, NRTL and

Isothermal P-x vapour-liquid equilibrium data for the binary mixtures of cyclopentanone + 1,2-dichloroethane (I) and 1,1,1-trichloroethane (II) within the temperature range 298.15 – 313.15 K were measured by a static method. The mixtures were prepared by weight and were degassed directly in the equilibrium cell. The experimental data were correlated by the maximum likelihood method and different expressions for excess Gibbs energy were tested.

The Soave-Redlich-Kwong equation of state with simple quadratic mixing rule using only one mixture parameter, kij was tested as for the representation of vapour-liquid-liquid equilibria in binary carbon dioxide – 1-alcohol systems. The necessary parameters for the description of the selected experimental data of carbon dioxide – 1-alcohol systems are reported and the results of the correlation and prediction are discussed.

Liquid densities and excess molar volumes (VE) are reported for the binary water + diethylene glycolamine, and water, methanol, ethanol, 1-propanol + triethylene glycol systems at atmospheric pressure and temperatures between 283.15 and 363.15K in 10K intervals. Negative VE were found for all investigated systems. At given temperature, the most negative VE is for the water + diethylene glycolamine system. For water containing systems, VE increase