Predictions of Activity Coefficients of Nearly Athermal Binary Mixtures Using Cubic Equations of State

2003 ◽  
Vol 42 (17) ◽  
pp. 4143-4145 ◽  
Author(s):  
Pablo A. Sacomani ◽  
Esteban A. Brignole
Keyword(s):  
Binary Mixtures ◽  
Activity Coefficients ◽  
Equations Of State

scholarly journals Assessment of certain ionic liquids for separation of binary mixtures based on gamma infinity data measurements

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7092-7107 ◽  
Author(s):  
M. Karpińska ◽  
M. Wlazło ◽  
D. Ramjugernath ◽  
P. Naidoo ◽  
U. Domańska
Keyword(s):  
Ionic Liquids ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Thermodynamic Functions ◽  
Partition Coefficients

Limiting activity coefficients for 64 solutes in [BzMIM][NTf2] and [BzMIM][DCA], the gas–liquid partition coefficients, KL, thermodynamic functions and selectivity for hexane/hex-1-ene, cyclohexane/cyclohexene and ethylbenzene/styrene separation were presented.

Activity coefficients and excess Gibbs’ free energy of some binary mixtures formed by p-cresol at 95.23kPa

2007 ◽  
Vol 39 (7) ◽  
pp. 1022-1026 ◽  
Author(s):  
T.E. Vittal Prasad ◽  
N. Venkanna ◽  
Y. Naveen Kumar ◽  
K. Ashok ◽  
N.M. Sirisha ◽  
...  
Keyword(s):  
Free Energy ◽  
Gibbs Free Energy ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Excess Gibbs Free Energy

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

scholarly journals Flash point of organic binary mixtures containing alcohols: experiment and prediction

2013 ◽  
Vol 11 (3) ◽  
pp. 388-393 ◽  
Author(s):  
Mariana Hristova ◽  
Dimitar Damgaliev
Keyword(s):  
Experimental Data ◽  
Activity Coefficient ◽  
Binary Mixtures ◽  
Activity Coefficients ◽  
Thermodynamic Model ◽  
Flash Point ◽  
Wilson Equation ◽  
Nrtl Equation

AbstractThe flash points of three organic binary mixtures containing alcohols were measured in the present work. The experimental data was obtained using the Pensky-Martens closed cup tester. The experimental data were compared with the values calculated by the Liaw model. Activity coefficients were calculated by the Wilson equation and NRTL equation. The accuracy of predicted flash point values is dependent on the thermodynamic model used for activity coefficient.

Activity Coefficients and Excess Gibbs Energies for Binary Mixtures of N-Methyl-2-pyrrolidone with Some Substituted Ethanols

2012 ◽  
Vol 57 (5) ◽  
pp. 1412-1416 ◽  
Author(s):  
K. Rayapa Reddy ◽  
D. Bala Karuna Kumar ◽  
G. Srinivasa Rao ◽  
P. V. S. Sairam ◽  
P. Anila ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Activity Coefficients ◽  
Gibbs Energies ◽  
Excess Gibbs Energies
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