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Kinetic evaluation of methane-carbon dioxide reforming process based on the reaction steps / Cesar A. M Abreu in Industrial & engineering chemistry research, Vol. 47 n°14 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4617-4622 Titre : Kinetic evaluation of methane-carbon dioxide reforming process based on the reaction steps Type de document : texte imprimé Auteurs : Cesar A. M Abreu, Auteur ; Douglas A Santos, Auteur ; José A Pacífico, Auteur ; Nelson M Lima Filho, Auteur Année de publication : 2008 Article en page(s) : p. 4617-4622 Note générale : Bibliogr. p. 4621-4622 Langues : Anglais (eng) Mots-clés : Methane-carbon  dioxide;  Mass  balance  equations;  Fixed-bed  reactor Résumé : Evaluations of the methane-carbon dioxide component of a carbon reforming process over a Ni/γ-Al2O3 catalyst were performed in a fixed-bed reactor at 1023, 1073, and 1123 K. The fitting of mass balance equations, including kinetic rate laws based on a mechanism proposition of three reaction steps, was formulated following experimental indications, where each step of the reaction system was individually evaluated. The comparison between experimental and calculated concentrations of the reactants and product effluents of the fixed-bed reactor leads to the estimation of the order of magnitude of the kinetic parameters corresponding to the reaction steps. The model was validated with the syngas selectivities evolutions at 943-1146 K. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071546y [article] Kinetic evaluation of methane-carbon dioxide reforming process based on the reaction steps [texte imprimé] / Cesar A. M Abreu, Auteur ; Douglas A Santos, Auteur ; José A Pacífico, Auteur ; Nelson M Lima Filho, Auteur . - 2008 . - p. 4617-4622. Bibliogr. p. 4621-4622 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4617-4622 Mots-clés : Methane-carbon  dioxide;  Mass  balance  equations;  Fixed-bed  reactor Résumé : Evaluations of the methane-carbon dioxide component of a carbon reforming process over a Ni/γ-Al2O3 catalyst were performed in a fixed-bed reactor at 1023, 1073, and 1123 K. The fitting of mass balance equations, including kinetic rate laws based on a mechanism proposition of three reaction steps, was formulated following experimental indications, where each step of the reaction system was individually evaluated. The comparison between experimental and calculated concentrations of the reactants and product effluents of the fixed-bed reactor leads to the estimation of the order of magnitude of the kinetic parameters corresponding to the reaction steps. The model was validated with the syngas selectivities evolutions at 943-1146 K. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071546y