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Estimation of effectiveness factor for arbitrary particle shape and non-linear kinetics / Néstor J. Mariani in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1172–1177 Titre : Estimation of effectiveness factor for arbitrary particle shape and non-linear kinetics Type de document : texte imprimé Auteurs : Néstor J. Mariani, Auteur ; Clarisa Mocciaro, Auteur ; Osvaldo M. Martínez, Auteur ; Guillermo F. Barreto, Auteur Année de publication : 2009 Article en page(s) : p. 1172–1177 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Catalytic  pellets  --  analysis  Generalized  cylinder Résumé : A one-dimensional model, called generalized cylinder (GC), is employed to analyze the diffusion−reaction problem in catalytic pellets of different shapes and nonlinear kinetics. The fitting parameter (σ) of the GC model was adjusted by matching the behavior of the actual pellet at high reaction rates. The errors of the GC model, considering five different kinetic expressions (isothermal zero and second order, isothermal Langmuir−Hinshelwood−Hougen−Watson type, first order exothermic, and first order endothermic) and four different catalytic pellet shapes turned out to be less than 3.5%. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800578p [article] Estimation of effectiveness factor for arbitrary particle shape and non-linear kinetics [texte imprimé] / Néstor J. Mariani, Auteur ; Clarisa Mocciaro, Auteur ; Osvaldo M. Martínez, Auteur ; Guillermo F. Barreto, Auteur . - 2009 . - p. 1172–1177. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1172–1177 Mots-clés : Catalytic  pellets  --  analysis  Generalized  cylinder Résumé : A one-dimensional model, called generalized cylinder (GC), is employed to analyze the diffusion−reaction problem in catalytic pellets of different shapes and nonlinear kinetics. The fitting parameter (σ) of the GC model was adjusted by matching the behavior of the actual pellet at high reaction rates. The errors of the GC model, considering five different kinetic expressions (isothermal zero and second order, isothermal Langmuir−Hinshelwood−Hougen−Watson type, first order exothermic, and first order endothermic) and four different catalytic pellet shapes turned out to be less than 3.5%. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800578p