Fallibilities Inherent in the Wilson Equation Applied to Systems Having a Negative Excess Gibbs Energy

1975 ◽  
Vol 14 (3) ◽  
pp. 191-195 ◽  
Author(s):  
André J. Ladurelli ◽  
Claude H. Eon ◽  
Georges Guiochon
Keyword(s):  
Gibbs Energy ◽  
Excess Gibbs Energy ◽  
Wilson Equation

On Temperature Dependence of Excess Gibbs Energy

1999 ◽  
Vol 64 (7) ◽  
pp. 1093-1099 ◽  
Author(s):  
Ivona Malijevská ◽  
Anatol Malijevský
Keyword(s):  
Heat Capacity ◽  
Gibbs Energy ◽  
Temperature Dependence ◽  
Excess Gibbs Energy ◽  
Excess Enthalpy ◽  
Excess Heat Capacity ◽  
Wilson Equation ◽  
Excess Heat ◽  
Energy Excess ◽  
Wilson And Nrtl Equations

Temperature dependence of GE is discussed for three widely used equations linear and nonlinear in parameters. It is shown that the Wilson equation predicts always positive excess heat capacity regardless of values of its parameters. Several temperature modifications of the Redlich-Kister, Wilson and NRTL equations are discussed with respect to the sign of the excess Gibbs energy, excess enthalpy and excess heat capacity.

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