Vapour-liquid equilibrium in the benzene(1)-propionic acid(2)-acetic acid(3) ternary system

1986 ◽  
Vol 51 (12) ◽  
pp. 2665-2674 ◽  
Author(s):  
Ivona Malijevská ◽  
Helena Perničková ◽  
Karel Ledvinka ◽  
Bohuslav Doležal
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Binary Data ◽  
Normal Pressure ◽  
Wilson Equation ◽  
Liquid Equilibrium ◽  
Experimental Values

Results of measurement of vapour-liquid equilibria in the benzene-propionic acid-acetic acid ternary system at normal pressure are presented. The activity coefficients were, within the framework of inaccuracies determined on the basis of the law of error propagation, subjected to a test of consistency and correlated by the Wilson equation. The experimental values of activity coefficients are compared with the values calculated on the basis of the Wilson equation with its constants obtained both from the ternary and from the binary data and with the values estimated by the UNIFAC method.

Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid

1989 ◽  
Vol 54 (11) ◽  
pp. 2840-2847 ◽  
Author(s):  
Ivona Malijevská ◽  
Alena Maštalková ◽  
Marie Sýsová
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Analytical Techniques ◽  
Liquid Equilibrium ◽  
Consistency Test ◽  
Propagation Law ◽  
Equilibrium Data

Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.

Vapour-liquid equilibrium in strongly associated systems. The systems acetic acid-propionic acid and acetic acid-trifluoroacetic acid

1986 ◽  
Vol 51 (1) ◽  
pp. 194-205 ◽  
Author(s):  
Ivona Malijevská ◽  
Marie Sýsová ◽  
Dagmar Vlčková
Keyword(s):  
Acetic Acid ◽  
Propionic Acid ◽  
Trifluoroacetic Acid ◽  
Normal Pressure ◽  
Vapour Phase ◽  
Liquid Equilibrium ◽  
Correct Expression

Vapour-liquid equilibrium was measured in the systems acetic acid-propionic acid and acetic acid-trifluoroacetic acid at normal pressure. Special emphasis has been laid on the correct expression of the P-V-T behaviour in the vapour phase and the analysis of the data obtained.

Liquid–liquid equilibrium of the ternary system water+acetic acid+sec-butyl acetate

2010 ◽  
Vol 293 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Song Hu ◽  
Qing-lin Chen ◽  
Bing-jian Zhang ◽  
Yuan-lan Liang ◽  
Xue-nong Gao
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Butyl Acetate ◽  
Liquid Equilibrium ◽  
System Water

Excess Gibbs energy for binary mixtures of acetonitrile with acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid

1991 ◽  
Vol 69 (12) ◽  
pp. 2117-2121 ◽  
Author(s):  
T. S. Banipal ◽  
B. S. Lark ◽  
S. Singh
Keyword(s):  
Acetic Acid ◽  
Gibbs Energy ◽  
Carboxylic Acids ◽  
Propionic Acid ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Excess Gibbs Energy ◽  
Composition Range ◽  
Isobutyric Acid ◽  
Dimerization Constant

Total vapour pressures for binary mixtures containing acetic acid, propionic acid, isobutyric acid, and trimethylacetic acid with acetonitrile have been measured for the entire composition range at 298.15 and 318.15 K using a static manometric method. All systems show positive deviations from Raoult's law, enhanced by both an increase in temperature and an increase in the methylation of acetic acid. Activity coefficients have been calculated by taking into consideration the dimerization of these carboxylic acids in the vapour phase. TSE values obtained from GE and earlier reported HE values are found to be negative for acetic acid, about zero for propionic and isobutyric acids, and positive for trimethylacetic acid for the whole composition range. The results have been interpreted in terms of various contributions such as depolymerization, heteromolecular dipole–dipole interactions, and the increasing dimerization constant and steric hindrance with increase of complexity of the acid. Key words: excess Gibbs energy, carboxylic acids, acetonitrile, activity coefficients

Densities, refractive indices and excess properties of mixing of the n-octanol + 1,4-dioxane + 2-butanol ternary system at 298.15 K

2000 ◽  
Vol 78 (8) ◽  
pp. 1121-1127 ◽  
Author(s):  
Alberto G Camacho ◽  
Miguel A Postigo ◽  
Graciela C Pedrosa ◽  
Inés L Acevedo ◽  
Miguel Katz
Keyword(s):  
Ternary System ◽  
Physical Properties ◽  
Binary Mixtures ◽  
Binary Data ◽  
Excess Molar Volumes ◽  
Excess Properties ◽  
Refractive Indices ◽  
Molar Volumes ◽  
Experimental Values

Excess molar volumes and excess refractive indices of the n-octanol + 1,4-dioxane + 2-butanol system and the three corresponding binary mixtures have been determined at 298.15 K by measuring densities and refractive indices. Different expressions exist in the literature to predict these excess properties from binary data. An estimation of excess molar volumes is also evaluated using a modified Heller equation which depends on the refractive indices of the mixtures. A comparison of the predictions of different methods with the experimental values of the physical properties has been made.Key words: excess molar volumes, densities, refractive indices, n-octanol, 1,4-dioxane, 2-butanol, ternary system.

Conductivity of the Liquid System Water + Acetic Acid + Silver Acetate

1978 ◽  
Vol 33 (9) ◽  
pp. 1105-1106
Author(s):  
R. Haase ◽  
H. Ben Nasr ◽  
K .-H . Dücker
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Electric Conductivity ◽  
Infinite Dilution ◽  
Liquid System ◽  
Silver Acetate ◽  
Equivalent Conductivity ◽  
Experimental Values ◽  
Limiting Values ◽  
System Water

We present and discuss experimental values of the electric conductivity (and of the density) for the liquid ternary system water + acetic acid + silver acetate at 25 °C. The results given here represent a selection from measurements on more than 200 compositions. The concepts of equivalent conductivity and of limiting values for infinite dilution in the ternary system are also dealt with briefly.

Vapour-liquid equilibrium in strongly associated systems. The propionic acid-n-heptane system

1985 ◽  
Vol 50 (10) ◽  
pp. 2101-2110 ◽  
Author(s):  
Ivona Malijevská ◽  
Dagmar Vlčková
Keyword(s):  
Propionic Acid ◽  
Normal Pressure ◽  
Vapour Phase ◽  
Liquid Equilibrium ◽  
Correct Expression

Vapour-liquid equilibrium in the propionic acid-n-heptane system was measured at normal pressure. When treating the data, emphasis was laid on the correct expression of volumetric behaviour in the vapour phase and the analysis of the data obtained.

Isobaric Vapor-Liquid Equilibria for the System Containing Acetic Acid at 101.3kPa

2012 ◽  
Vol 560-561 ◽  
pp. 79-85 ◽  
Author(s):  
Hua Xin ◽  
Xu Feng Wang ◽  
Joshua Qing Song Li
Keyword(s):  
Acetic Acid ◽  
Vapor Phase ◽  
Binary Data ◽  
Model Parameters ◽  
Nrtl Model ◽  
Vle Data ◽  
Predicted Values ◽  
Experimental Values ◽  
Vapor Liquid Equilibria ◽  
Vapor Liquid

Isobaric vapor-liquid equilibria (VLE) data for water + acetic acid, acetic acid + n-pentyl acetate, water + acetic acid + n-pentyl acetate systems have been measured at 101.33 k Pa using a recirculating still. The nonideality of the vapor phase caused by the association of the acetic acid has been corrected by the Hayden-O’Connellmethod. The three experimental binary data have been correlated by the NRTL and UNIQUAC models. The obtained NRTL model parameters from binary data have been used to predict ternary VLE data. The ternary predicted values obtained in this way agree well with the experimental values.

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