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The development of a macro kinetic model for a commercial Co/Pt/Al2O3 fischer−tropsch catalyst / F. Gideon Botes in Industrial & engineering chemistry research, Vol. 48 N° 23 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 23 (Décembre 2009) . - pp. 10439–10447 Titre : The development of a macro kinetic model for a commercial Co/Pt/Al2O3 fischer−tropsch catalyst Type de document : texte imprimé Auteurs : F. Gideon Botes, Auteur ; Braam van Dyk, Auteur ; Craig McGregor, Auteur Année de publication : 2010 Article en page(s) : pp. 10439–10447 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Development--Macro--Kinetic--Model--Commercial--Co/Pt/Al2O3--Fischer−Tropsch--Catalyst Résumé : An experimental study was performed with an aged Co/Pt/Al2O3 catalyst in a laboratory slurry reactor to develop a macrokinetic expression for the Fischer−Tropsch (FT) synthesis. A semiempirical model was found to be the preferred two-parameter rate equation of the reaction. However, it was shown that this model is virtually indistinguishable from a mechanistically derived three-parameter rate model that assumes the following kinetically relevant steps in the cobalt-FT synthesis: CO dissociation occurs without hydrogen interaction and is not a rate-limiting step; the first hydrogen addition to surface carbon and the second hydrogen addition to surface oxygen are the rate-determining steps. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900119z [article] The development of a macro kinetic model for a commercial Co/Pt/Al2O3 fischer−tropsch catalyst [texte imprimé] / F. Gideon Botes, Auteur ; Braam van Dyk, Auteur ; Craig McGregor, Auteur . - 2010 . - pp. 10439–10447. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 23 (Décembre 2009) . - pp. 10439–10447 Mots-clés : Development--Macro--Kinetic--Model--Commercial--Co/Pt/Al2O3--Fischer−Tropsch--Catalyst Résumé : An experimental study was performed with an aged Co/Pt/Al2O3 catalyst in a laboratory slurry reactor to develop a macrokinetic expression for the Fischer−Tropsch (FT) synthesis. A semiempirical model was found to be the preferred two-parameter rate equation of the reaction. However, it was shown that this model is virtually indistinguishable from a mechanistically derived three-parameter rate model that assumes the following kinetically relevant steps in the cobalt-FT synthesis: CO dissociation occurs without hydrogen interaction and is not a rate-limiting step; the first hydrogen addition to surface carbon and the second hydrogen addition to surface oxygen are the rate-determining steps. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900119z