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High - pressure methane combustion over a perovskyte catalyst / Paola S. Barbato in Industrial & engineering chemistry research, Vol. 51 N° 22 (Juin 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 22 (Juin 2012) . - pp. 7547–7558 Titre : High - pressure methane combustion over a perovskyte catalyst Type de document : texte imprimé Auteurs : Paola S. Barbato, Auteur ; Almerinda Di Benedetto, Auteur ; Valeria Di Sarli, Auteur Année de publication : 2012 Article en page(s) : pp. 7547–7558 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Combustion  Catalyst Résumé : Catalytic combustion has been extensively studied as an alternative route to homogeneous combustion for power generation systems, in particular for gas turbines. Despite the great interest, very little work has been devoted to high-pressure catalytic combustion, i.e., under conditions more relevant for gas turbines. In this work, the effect of pressure on the catalytic combustion of methane on a perovskite-based monolith is investigated both experimentally and numerically. Results show that methane can be ignited by increasing the operating pressure, and this behavior can be reproduced qualitatively and quantitatively by simulating the monolith using simple overall homogeneous and heterogeneous reaction rates. Moreover, numerical results show that only the coupling between catalytic and homogeneous reactions allows correct prediction of methane conversion. As the operating pressure increases, the catalytic reaction is activated, thus behaving as a pilot for sustaining the homogeneous reaction that allows it to overcome the mass transport limitations at the catalytic surface. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201736p [article] High - pressure methane combustion over a perovskyte catalyst [texte imprimé] / Paola S. Barbato, Auteur ; Almerinda Di Benedetto, Auteur ; Valeria Di Sarli, Auteur . - 2012 . - pp. 7547–7558. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 22 (Juin 2012) . - pp. 7547–7558 Mots-clés : Combustion  Catalyst Résumé : Catalytic combustion has been extensively studied as an alternative route to homogeneous combustion for power generation systems, in particular for gas turbines. Despite the great interest, very little work has been devoted to high-pressure catalytic combustion, i.e., under conditions more relevant for gas turbines. In this work, the effect of pressure on the catalytic combustion of methane on a perovskite-based monolith is investigated both experimentally and numerically. Results show that methane can be ignited by increasing the operating pressure, and this behavior can be reproduced qualitatively and quantitatively by simulating the monolith using simple overall homogeneous and heterogeneous reaction rates. Moreover, numerical results show that only the coupling between catalytic and homogeneous reactions allows correct prediction of methane conversion. As the operating pressure increases, the catalytic reaction is activated, thus behaving as a pilot for sustaining the homogeneous reaction that allows it to overcome the mass transport limitations at the catalytic surface. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201736p