| Titre : | Transient diffusion within spherical particles : numerical resolution of the Maxwell−Stefan formulation (2010) |
| Auteurs : | Erminia Leonardi, Auteur ; Celestino Angeli, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 12, Juin 2010) |
| Article en page(s) : | pp. 5654–5660 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Maxwell− ; Stefan equations Physical systems Mass-transfer |
| Résumé : | The generalized Maxwell−Stefan equations describe the mass-transfer process in a multicomponent mixture in different physical systems. This approach to the mass-transfer phenomenon has been largely used in particular for the simulation of the multicomponent diffusion in microporous systems. Our group has recently proposed (Leonardi, E.; Angeli, C. J. Phys. Chem. B 2010, 114, 151) a general numerical procedure for the resolution of the Maxwell−Stefan equations in the transient regime for one-dimensional systems. This procedure has been applied for the study of bulk diffusion, the uptake process on a microporous material, and permeation across a microporous membrane. In this paper this approach is extended to the case of diffusion within a sphere, which can be reduced to a one-dimensional problem in the presence of isotropy. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie1004724 |
