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Modeling temperature profiles of a catalytic autothermal methane reformer with nickel catalyst / Diego Scognamiglio in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1804–1815 Titre : Modeling temperature profiles of a catalytic autothermal methane reformer with nickel catalyst Type de document : texte imprimé Auteurs : Diego Scognamiglio, Auteur ; Lucia Russo, Auteur ; Pier Luca Maffettone, Auteur Année de publication : 2009 Article en page(s) : pp. 1804–1815 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : One-dimensional  heterogeneous  model  Autothermal  methane  Fixed-bed  reactor  Kinetic  modelSteam-to-methane  ratios Résumé : In this work, a one-dimensional heterogeneous model for the autothermal reforming of methane in a catalytic (Ni/Al2O3 catalyst) fixed-bed reactor is proposed. The kinetic model implements an indirect reaction scheme and includes a reduction factor that is dependent on the oxygen concentration. Such a factor delays the reforming and water-gas shift reactions, with respect to the oxidation reactions. Experiments at different steam-to-methane ratios and feed flow rates were conducted in a small-scale reactor to identify and validate the proposed mathematical model. To this end, temperature profiles in the solid phase were measured with an infrared camera. The agreement between experimental data and model predictions is very good for all the investigated operating conditions. In particular, the model predicts the strong separation between the oxidation and the experimentally observed reforming zones well. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800518e [article] Modeling temperature profiles of a catalytic autothermal methane reformer with nickel catalyst [texte imprimé] / Diego Scognamiglio, Auteur ; Lucia Russo, Auteur ; Pier Luca Maffettone, Auteur . - 2009 . - pp. 1804–1815. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1804–1815 Mots-clés : One-dimensional  heterogeneous  model  Autothermal  methane  Fixed-bed  reactor  Kinetic  modelSteam-to-methane  ratios Résumé : In this work, a one-dimensional heterogeneous model for the autothermal reforming of methane in a catalytic (Ni/Al2O3 catalyst) fixed-bed reactor is proposed. The kinetic model implements an indirect reaction scheme and includes a reduction factor that is dependent on the oxygen concentration. Such a factor delays the reforming and water-gas shift reactions, with respect to the oxidation reactions. Experiments at different steam-to-methane ratios and feed flow rates were conducted in a small-scale reactor to identify and validate the proposed mathematical model. To this end, temperature profiles in the solid phase were measured with an infrared camera. The agreement between experimental data and model predictions is very good for all the investigated operating conditions. In particular, the model predicts the strong separation between the oxidation and the experimentally observed reforming zones well. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800518e