Experimental and kinetic study of iow temperature selective catalytic reduction of NO with NH3 over the V2O5/AC catalyst / Zhigang Lei in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5360-5368 Titre : Experimental and kinetic study of iow temperature selective catalytic reduction of NO with NH3 over the V2O5/AC catalyst Type de document : texte imprimé Auteurs : Zhigang Lei, Auteur ; Aibin Long, Auteur ; Cuiping Wen, Auteur Année de publication : 2011 Article en page(s) : pp. 5360-5368 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Catalyst Selective catalytic reduction Low temperature Kinetics Résumé : Selective catalytic reduction (SCR) of NO (nitric oxide) by NH3 (ammonia) at temperatures of393-523 K over AC (activated carbon) supported V2O5 (vanadium pentoxide) was investigated in this work. The V2O5/AC catalyst was prepared by the pore volume impregnation method. The intrinsic kinetics for this catalyst was first measured in the absence of internal and external diffusions in a fixed-bed microreactor. Then, five intrinsic kinetic models, i.e. the Eley-Rideal model, the Langmuir―Hinshelwood model, the Mars-van Krevelen model, the first-order model, and the power-rate law model, were applied to correlate the experimental data. Among them, the Eley-Rideal model is the most accurate, and the Langmuir-Hinshelwood model is unfeasible for describing SCR of NO by NH3 over the V2O5/AC catalyst. Therefore, the SCR of NO with NH3 over V2O5/AC is likely to Follow the Eley-Rideal mechanism in light ofintrinsic kinetic measurements. Finally, the kinetic equations were incorporated into a 3D mathematical model for monolithic honeycomb reactor, and it was found that the Eley-Rideal model is more suitable and can provide useful information for future application in the actual industrial plants. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128658 [article] Experimental and kinetic study of iow temperature selective catalytic reduction of NO with NH3 over the V2O5/AC catalyst [texte imprimé] / Zhigang Lei, Auteur ; Aibin Long, Auteur ; Cuiping Wen, Auteur . - 2011 . - pp. 5360-5368. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5360-5368 Mots-clés : Catalyst Selective catalytic reduction Low temperature Kinetics Résumé : Selective catalytic reduction (SCR) of NO (nitric oxide) by NH3 (ammonia) at temperatures of393-523 K over AC (activated carbon) supported V2O5 (vanadium pentoxide) was investigated in this work. The V2O5/AC catalyst was prepared by the pore volume impregnation method. The intrinsic kinetics for this catalyst was first measured in the absence of internal and external diffusions in a fixed-bed microreactor. Then, five intrinsic kinetic models, i.e. the Eley-Rideal model, the Langmuir―Hinshelwood model, the Mars-van Krevelen model, the first-order model, and the power-rate law model, were applied to correlate the experimental data. Among them, the Eley-Rideal model is the most accurate, and the Langmuir-Hinshelwood model is unfeasible for describing SCR of NO by NH3 over the V2O5/AC catalyst. Therefore, the SCR of NO with NH3 over V2O5/AC is likely to Follow the Eley-Rideal mechanism in light ofintrinsic kinetic measurements. Finally, the kinetic equations were incorporated into a 3D mathematical model for monolithic honeycomb reactor, and it was found that the Eley-Rideal model is more suitable and can provide useful information for future application in the actual industrial plants. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128658

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