Application of the vacancy solution theory to describe the enthalpic effects accompanying mixed-gas adsorption.
The possibility of utilizing vacancy solution theory (VST) to study the enthalpic effects accompanying mixed-gas adsorption equilibria is presented. Besides heterogeneity, the interaction effects by using the regular adsorbed solution, Flory-Huggins, and Wilson models of nonideality in the adsorbed phase are taken into account. To predict adsorption phase diagrams and calorimetric effects in the mixed-gas adsorption system, only a knowledge of the single-gas adsorption isotherms and accompanying calorimetric effects is required. The possibility of simplification of the obtained theoretical expressions is shown. The obtained agreement between theory and experiment is very satisfactory.
Nieszporek
K
K
Department of Theoretical Chemistry, Faculty of Chemistry, MCS University, M.C. Skłodowska sq. 3, 20-031 Lublin, Poland. krzysn@hektor.umcs.lublin.pl