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Article
Adsorption of Gas Mixtures: Effect of Energetic Heterogeneity
AIChE Journal
  • D. P. Valenzuela, University of Pennsylvania
  • Alan L. Myers, University of Pennsylvania
  • Orhan Talu, Cleveland State University
  • I. Zwiebel
Document Type
Article
Publication Date
3-1-1988
Abstract
The ideal adsorbed solution (IAS) theory of adsorption of gas mixtures is extended to the case of energetic heterogeneity. A heterogeneous ideal adsorbed solution (HIAS) behaves ideally on a particular site, but energetic heterogeneity causes a segregation in the composition of the adsorbed phase. Equilibrium properties are obtained by integrating over a multivariate energy distribution based upon perfect positive correlation of site energies. The fact that predictions from HIAS are always an improvement over IAS indicates that heterogeneity is a factor that must be considered in theories of mixed-gas adsorption. Errors in HIAS predictions may be caused by steric exclusion of the larger molecules from micropores accessible to smaller molecules.
DOI
http://onlinelibrary.wiley.com/doi/10.1002/aic.690340306/abstract
Citation Information
D. P. Valenzuela, A. L. Myers, O. Talu2 & I. Zwiebel3. (1988). Adsorption of Gas Mixtures: Effect of Energetic Heterogeneity. AIChE Journal, 34, 3, 397-402.