The scope of the study was the experimental determination of liquid densities and excess molar volumes (VE) for strong associated binary systems and the consistent thermodynamic modelling of the data obtained. As model systems, water + diethylene glycolamine, and water, methanol, ethanol, 1-propanol + triethylene glycol systems have been selected. The measurements have been carried out at atmospheric pressure and temperatures between 283.15 and 363.15

In this paper the Soave-Redlich-Kwong equation of state with quadratic mixing rule has been tested for the modelling of phase equilibria data at high pressures in systems of different complexity as it follows: binary and ternary systems containing nitrogen - carbon dioxide - methanol - dimethyl ether and hydrofluorocarbons (HFCs) + lubricant oils (polyalkylene glycols (PAGs) and polyol esters (POEs)). The interaction parameters kij were evaluated

Excess molar enthalpies, HE, for the binary systems of benzene or cyclohexane with 1,1-diethoxyethane at 323.15 K and with 2,2-dimethoxybutane at 303.15 K are presented. Additionally, infinite dilution activity coefficients for benzene and cyclohexane in 1,1-diethoxyethane have been measured between 293.08 K and 323.15 K. The heat of mixing measurements have been carried out by means of a commercially available Hart Scientific (model 7501) flow calorimeter

Both the published and our new data on vapour-liquid equilibrium, excess Gibbs energy GE and excess enthalpy HE for the linear ketone-chloroalkane binary mixtures are interpreted in terms of the DISQUAC group contribution model. The components are characterized by three types of contact surfaces: chlorine (Cl), carbonyl (C=O) and alkyl (CH3, CH2, CH, C). The Cl/alkyl and C=O/alkyl contact parameters are known from the literature. The parameters for

The Soave-Redlich-Kwong (SRK) equation of state (EOS) is used to describe vapor-liquid (VLE) and vapor-liquid-liquid (VLLE) equilibria of mixtures containing environmentally friendly refrigerants (hydrofluorocarbons, HFCs) and lubricant oils (polyalkylene glycols, PAGs and polyol esters, POEs) at high pressures. For refrigerants, pure component parameters are used as they were found in refrigerant properties computer program Version 6.0 of REFPROP.

The Soave-Redlich-Kwong equation of state is a well-known tool for the correlation of phase equilibria at high pressures. It quite successfully describes very complex systems. In this paper, the SRK EOS has been tested with respect to its capability to describe nitrogen and carbon dioxide solubilities in alternative fuels (dimethyl ether or methanol) at high pressures. The results of correlation of vapor-liquid equilibria (VLE) for five binary systems

Reliable azeotropic data have been measured for the following four binary systems: methanol + diethoxymethane, 2-propanol + diethoxymethane, diethoxymethane + dimethyl carbonate and 2,2-dimethoxybutane + toluene by means of a wire band column. Additionally, solid-liquid equilibria (SLE) for the six binary systems of benzene and cyclohexane with diethoxymethane, 2,2-dimethoxybutane, and 1,1-diethoxyethane have been measured by a visual technique.

The DISQUAC, an extended quasichemical pseudo-lattice group contribution model, has been successfully applied in the critical evaluation of thermodynamic properties of mixtures from different classes of organic substances. The purpose of this paper is to evaluate the interchange parameters for the C=O / Cl contact in linear ketones + chloroalkanes mixtures and to test the DISQUAC model for consistent description of phase equilibria and related excess

The data available in the literature and our data on vapour-liquid equilibria (VLE), molar excess Gibbs energies (GE) and molar excess enthalpies (HE) of linear ketone + chloroalkane mixtures are examined in terms of the DISQUAC group contribution model. The treatment of the experimental data was performed taking into account the expected structural effects. It was found that the quasichemical term for the contact C=O / Cl in the ketone + (a,w)-dichloroalkane

In the present work new experimental VLE data (P, T, x, y) are reported for the ternary nitrogen (1) + dimethyl ether (2) + methanol (3) system at 40 and 15 0C. The system has not been previously studied. The experimental data are presented by comparison with those predicted by means of the SRK equation of state with MHV2 mixing rule combined with modified UNIFAC or UNIQUAC models. In order to see if an ideal behavior of the ternary system is valid