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The reliable prediction of fluid-mixture behavior is essential in applied thermodynamics. Current group-contribution methods have proven to be widely applicable and sometimes, but not always successful in describing thermophysical properties. Since these semi-empirical methods are lacking a theoretical basis for the definition of functional groups, they often deliver unreliable predictions. Previous...
The physically founded excess Gibbs energy model, GEQUAC, allows the description of excess properties for associating as well as nonassociating liquid mixtures. This is achieved by explicitly accounting for different poles of molecular surface between which strong interactions take place in a mixture. In previous work, the model concept and the subsequent model equation were tested against results...
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