Further work on predicting multicomponent diffusivities from pure-component diffusivities for surface diffusion and diffusion in zeolites

Simulation of diffusion in zeolitic structures

“…22. In a later article by the same authors (Chen et al, 1993) this has been solved by putting A = 0 for the case of vanishing occupancies. However, in our opinion the interaction parameter should vanish identically for infinite diluted systems.…”

Diffusion of oxygen, nitrogen and their mixtures in carbon molecular sieve

“…this article should be addressed to R. T. Yang atively few and our knowledge on the subject remains primitive (Habgood, 1958;Ma and Roux, 1973;Ma and Lee, 1977;Ruthven and Kumar, 1979;Palekar and Rajadhyaksha, 1986;Marutovsky and Bulow, 1987;Yasuda and Matsumoto, 1989;Krishna, 1990;Qureshi and Wei, 1990a,b;Tsikoyiannis and Wei, 1991a,b;Yang et al, 1991;Chen and Yang, 1992;Nelson and Wei, 1992;Chen et al, 1993;Krishna, 1993). There are only few theories with which one can predict multicomponent diffusivities from pure-component diffusivities, as discussed by Chen and Yang (1992).…”

“…. qn), to account for the mixed-adsorbate interactions (Yang et al, 1991;Chen et al, 1993). In the second theory, a simple solution was derived based on kinetic theory.…”

“…The multicomponent diffusivity matrix [D] is given by (Chen and Yang, 1992;Chen et al, 1993): sticking probability on adsorbed A sticking probability on vacant site…”

Surface Diffusion of Adsorbed Molecules in Porous Media: Monolayer, Multilayer, and Capillary Condensation Regimes

“…133,157 Yang and co-workers also suggested a method for predicting multicomponent diffusivities from single-component diffusivities using a kinetic theory. 151,158,159 In this review, one example of the estimation of multicomponent diffusivities proposed by Yang and co-workers is introduced for zeolitic diffusion…”