Some information on calculating the liquid-liquid equilibrium of ternary systems. an improvement of prediction of liquid-liquid equilibrium in ternary systems from binary equilibrium data

1982 ◽  
Vol 47 (5) ◽  
pp. 1420-1432 ◽  
Author(s):  
Július Surový ◽  
Ján Dojčanský ◽  
Soňa Bafrncová
Keyword(s):  
Polar Solvent ◽  
Ternary Systems ◽  
Correct Prediction ◽  
Liquid Equilibrium ◽  
Partially Miscible ◽  
Nrtl Equation ◽  
Equilibrium Data ◽  
Solvent Systems ◽  
Kister Equation ◽  
Mutual Solubilities

A possibility is described of improving the prediction of ternary liquid-liquid equilibrium data from binary ones by using three-parameter equations for calculating activity coefficients. The parameters for completely miscible pairs of liquids were determined from their vapour-liquid equilibrium data and those for partially miscible pairs of liquids from their mutual solubilities and from one limiting activity coefficient. A quantitatively correct prediction of the liquid-liquid equilibrium data was achieved in all cases by means of three different equations (NRTL equation, Redlich-Kister equation and Wilson equation modified by Novák and coworkers) in four hydrocarbon-hydrocarbon-polar solvent systems investigated.

Correlation of the liquid–liquid equilibrium data for specific ternary systems with one or two partially miscible binary subsystems

2009 ◽  
Vol 278 (1-2) ◽  
pp. 9-14 ◽  
Author(s):  
J.A. Reyes-Labarta ◽  
M.M. Olaya ◽  
R. Velasco ◽  
M.D. Serrano ◽  
A. Marcilla
Keyword(s):  
Ternary Systems ◽  
Liquid Equilibrium ◽  
Partially Miscible ◽  
Equilibrium Data

scholarly journals Vapor pressure, density, viscosity and refractive index of dimethyl sulfoxide + 1,4-dimethylbenzene system

2008 ◽  
Vol 73 (1) ◽  
pp. 73-85 ◽  
Author(s):  
Oana Ciocirlan ◽  
Olga Iulian
Keyword(s):  
Dimethyl Sulfoxide ◽  
Excess Molar Volumes ◽  
Excess Properties ◽  
Refractive Indices ◽  
Excess Functions ◽  
Liquid Equilibrium ◽  
Viscosity Deviations ◽  
Unifac Model ◽  
Equilibrium Data ◽  
Kister Equation

This paper reports the experimental results of isothermal vapor-liquid equilibrium data between 303.15 and 333.15 K, and densities, viscosities, refractive indices from 298.15 to 323.15 K of the dimethyl sulfoxide + 1,4-dime?thylbenzene system over the entire range of mixture composition. The obtained PTX data were correlated by the Wilson and NRTL models and estimated by the UNIFAC model. The excess Gibbs energy and activity coefficients were calculated and compared with others excess properties. Excess molar volumes, viscosity deviations and deviations in refractivity were calculated from the experimental data; all the computed quantities were fitted to the Redlich-Kister equation. The resulting excess functions were interpreted in terms of structure and interactions.

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