Phase Equilibria in 4-Methylpentan-2-one-Water and 4-Methylpentan-2-one-4-Methylpentan-2-ol Systems and Their Thermodynamic Description

2000 ◽  
Vol 65 (9) ◽  
pp. 1471-1486 ◽  
Author(s):  
Karel Řehák ◽  
Jaroslav Matouš ◽  
Josef P. Novák ◽  
Andreas Heintz
Keyword(s):  
Phase Equilibria ◽  
Excess Enthalpy ◽  
Thermodynamic Description ◽  
Water System ◽  
Excess Enthalpies ◽  
Liquid Equilibrium ◽  
Heterogeneous Region ◽  
Kister Equation ◽  
Correlation Procedure

Liquid-liquid equilibrium and excess enthalpies at 25, 40 and 60 °C were measured for the 4-methylpentan-2-one-water system. Vapour-liquid equilibrium at 115 °C and 99.96 kPa, and excess enthalpies at 25, 40 and 60 °C were determined for the 4-methylpentan-2-one- 4-methylpentan-2-ol system. The data obtained were correlated together with those given in literature using the superposition of the Wilson and Redlich-Kister equation. The correlation procedure utilised also the data on excess enthalpy measured in a heterogeneous region.

Liquid-vapour and liquid-liquid equilibria in the tetrahydrofuran(1)-n-hexane(2)-water(3) system

1980 ◽  
Vol 45 (4) ◽  
pp. 1159-1167 ◽  
Author(s):  
Jiří Lampa ◽  
Jaroslav Matouš ◽  
Josef P. Novák ◽  
Jiří Pick
Keyword(s):  
Experimental Data ◽  
Water System ◽  
Water Systems ◽  
Adequate Description ◽  
Liquid Equilibrium ◽  
Correlation Relation ◽  
Kister Equation

The object of this work is the isobaric vapour-liquid equilibrium (at 101.32 kPa) and the liquid-liquid equilibrium (at 30 and 50°C) in the ternary tetrahydrofuran-n-hexane-water system. Further, the isobaric vapour-liquid equilibrium (at 101.32 kPa) in the binary tetrahydrofuran-n-hexane and tetrahydrofuran-water systems has been established. The experimental data obtained have been fitted to the Redlich-Kister equation. The constants of the correlation relation determined from the data on the vapour-liquid equilibria have been proved to provide an adequate description of the liquid-liquid equilibrium.

Excess Enthalpy in the Systems Nitromethane-Water and Methyl tert-Butyl Ether-Water. Employing Data on Excess Enthalpy for Thermodynamic Description of Heterogeneous Systems

1999 ◽  
Vol 64 (9) ◽  
pp. 1393-1411 ◽  
Author(s):  
Karel Řehák ◽  
Josef P. Novák ◽  
Jana Konetzná ◽  
Andreas Heintz ◽  
Petr Voňka ◽  
...  
Keyword(s):  
Gibbs Energy ◽  
Excess Gibbs Energy ◽  
Excess Enthalpy ◽  
Thermodynamic Description ◽  
Heterogeneous Systems ◽  
Methyl Tert Butyl Ether ◽  
Butyl Ether ◽  
Calculation Of Parameters ◽  
Empirical Relations ◽  
Heterogeneous Region

The excess enthalpies measured in nitromethane-water and methyl tert-butyl ether-water systems at several temperatures are given. The values of the excess enthalpy were determined in both the homogeneous and heterogeneous regions. It is shown how the data for the heterogeneous region can be included in the calculation of parameters of empirical relations for the excess Gibbs energy. It follows from these calculations that the relations for the excess Gibbs energy can be obtained on the basis of the excess enthalpy data measured at several temperatures if the data also cover the heterogeneous region.

Phase equilibria in binary systems containing acetaldehyde

1979 ◽  
Vol 44 (6) ◽  
pp. 1852-1856 ◽  
Author(s):  
Josef Suška
Keyword(s):  
Experimental Data ◽  
Phase Equilibria ◽  
Diethyl Ether ◽  
Binary Systems ◽  
Water Systems ◽  
Liquid Equilibrium ◽  
Kister Equation

The vapour-liquid equilibrium in binary acetaldehyde-diethyl ether, acetaldehyde-ethanol and acetaldehyde-water systems was measured at the pressure of 101.32 kPa. The experimental data were correlated by the two- and three-constant Redlich-Kister equation.

Phase equilibria of phenol + tetrahydrofuran + water system and its thermodynamic description

1995 ◽  
Vol 109 (1) ◽  
pp. 113-129 ◽  
Author(s):  
Karel Řehák ◽  
Jaroslav Matouš ◽  
Josef P Novák
Keyword(s):  
Phase Equilibria ◽  
Thermodynamic Description ◽  
Water System

Phase equilibria in the acetaldehyde-diethyl ether-water system

1979 ◽  
Vol 44 (7) ◽  
pp. 1999-2005 ◽  
Author(s):  
Josef Suška
Keyword(s):  
Liquid Phase ◽  
Phase Equilibria ◽  
Diethyl Ether ◽  
Water System ◽  
Liquid Equilibrium ◽  
Isothermal Conditions ◽  
Equilibrium Data

Vapour-liquid and liquid-liquid phase equilibria in the ternary acetaldehyde-diethyl ether-water system were determined at isothermal conditions. Experimental vapour-liquid equilibrium data were correlated by the Renon-Prausnitz equation.

Vapour-Liquid Equilibria and Excess Thermodynamic Properties in Binary Systems of Cyclopentanone + Chloroalkanes in View of the Disquac and Unifac Group Contribution Models Extention

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Alexandru Birhala ◽  
Dana Dragoescu ◽  
Mariana Teodorescu
Keyword(s):  
Binary Systems ◽  
Excess Enthalpy ◽  
Group Contribution ◽  
Excess Properties ◽  
Structural Effects ◽  
Liquid Equilibrium ◽  
Excess Thermodynamic Properties ◽  
Different Types ◽  
Thermodynamic Excess Properties ◽  
Thermodynamic Excess

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 of the mentioned series mixtures.

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