Liquid-Phase Activity Coefficients for Saturated HF/H2O Mixtures with Vapor-Phase Nonidealities Described by Molecular Simulation

2004 ◽  
Vol 43 (1) ◽  
pp. 218-227 ◽  
Author(s):  
Scott J. Wierzchowski ◽  
David A. Kofke
Keyword(s):  
Liquid Phase ◽  
Molecular Simulation ◽  
Activity Coefficients ◽  
Vapor Phase ◽  
Phase Activity

Liquid phase activity coefficients and standard state hypothetical liquid fugacities for hydrocarbons

AIChE Journal ◽  
1962 ◽  
Vol 8 (4) ◽  
pp. 508-512
Author(s):  
Dwight S. Hoffman ◽  
J. Reed Welker ◽  
Rowland E. Felt ◽  
James H. Weber
Keyword(s):  
Liquid Phase ◽  
Activity Coefficients ◽  
Standard State ◽  
Phase Activity

Vapor–liquid equilibria in the system acetone–benzene

1970 ◽  
Vol 48 (2) ◽  
pp. 277-285 ◽  
Author(s):  
A. N. Campbell ◽  
R. M. Chatterjee
Keyword(s):  
Liquid Phase ◽  
Activity Coefficients ◽  
Binary Data ◽  
Interaction Constant ◽  
Binary Interaction ◽  
Critical Temperatures ◽  
Point Pressure ◽  
Vapor Liquid Equilibria ◽  
Phase Activity ◽  
Vapor Liquid

The saturation pressures and vapor–liquid compositions of 7 mixtures of the system acetone–benzene have been determined from a temperature of 100 °C and a pressure of about 2 atm up to the highest temperatures and pressures at which liquid and vapor coexist. The critical temperatures were determined by the disappearance-of-meniscus method.The P–T–X relations at the liquid–vapor phase boundaries, as obtained by the determination of the bubble-point pressure vs. temperature curves of a series of mixtures of known composition, do not indicate the existence of an azeotrope in the range of temperature and pressure of this research. The binary data have been treated thermodynamically to yield the liquid-phase activity coefficients. The partial molal volumes in the liquid mixture required for the Poynting correction (effect of pressure on liquid phase properties) for liquid-phase activity coefficients have also been obtained. The fugacity coefficient of a component in the vapor mixture has been obtained by a modified Redlich–Kwong equation, as suggested by Chueh and Prausnitz. Following their modification of the van Laar equation, several binary liquid phase parameters, such as the binary interaction constant, Henry's constant and dilation constant, as required for the solution model for excess Gibbs energy, have been calculated.

Vapor phase activity coefficients and standard state hypothetical vapor fugacities for hydrocarbons

AIChE Journal ◽  
1964 ◽  
Vol 10 (6) ◽  
pp. 901-906
Author(s):  
Dwight S. Hoffman ◽  
J. Reed Welker ◽  
V. N. P. Rao ◽  
James H. Weber
Keyword(s):  
Activity Coefficients ◽  
Vapor Phase ◽  
Standard State ◽  
Phase Activity
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