Kinetic models for the coke combustion on deactivated ZSM-5/MOR derived from n-heptane cracking / Ning Zhu in Industrial & engineering chemistry research, Vol. 49 N° 1 (Janvier 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 1 (Janvier 2010) . - pp. 89–93 Titre : Kinetic models for the coke combustion on deactivated ZSM-5/MOR derived from n-heptane cracking Type de document : texte imprimé Auteurs : Ning Zhu, Auteur ; Yuan-yuan Liu, Auteur ; Yang Wang, Auteur Année de publication : 2010 Article en page(s) : pp. 89–93 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Kinetic Models--Coke--Combustion--Deactivated--ZSM-5/MOR--Derived from n-Heptane--Cracking Résumé : The combustion behavior of coked H−ZSM-5/H−mordenite (ZSM-5/MOR) derived from catalytic cracking of n-heptane with and without water steam has been studied by thermogravimetric analysis (TGA). Catalytic cracking under vapor atmosphere with a water−oil ratio of 2 at 650 °C created only one type of coke deposit on the catalyst. On the other hand, two types of coke can be found on the coked catalyst deactivated by catalytic cracking without water steam. These results indicated different combustion kinetic models of different types of coke. A one-coke combustion model for the regeneration of coked catalyst obtained under water steam and a two-coke combustion model for the regeneration of coked catalyst derived without water steam were conducted by using TGA, respectively. Finally, the relationship between the C/H ratios and activation energies in the combustion kinetic models were investigated by ultimate analysis. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900855y [article] Kinetic models for the coke combustion on deactivated ZSM-5/MOR derived from n-heptane cracking [texte imprimé] / Ning Zhu, Auteur ; Yuan-yuan Liu, Auteur ; Yang Wang, Auteur . - 2010 . - pp. 89–93. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 1 (Janvier 2010) . - pp. 89–93 Mots-clés : Kinetic Models--Coke--Combustion--Deactivated--ZSM-5/MOR--Derived from n-Heptane--Cracking Résumé : The combustion behavior of coked H−ZSM-5/H−mordenite (ZSM-5/MOR) derived from catalytic cracking of n-heptane with and without water steam has been studied by thermogravimetric analysis (TGA). Catalytic cracking under vapor atmosphere with a water−oil ratio of 2 at 650 °C created only one type of coke deposit on the catalyst. On the other hand, two types of coke can be found on the coked catalyst deactivated by catalytic cracking without water steam. These results indicated different combustion kinetic models of different types of coke. A one-coke combustion model for the regeneration of coked catalyst obtained under water steam and a two-coke combustion model for the regeneration of coked catalyst derived without water steam were conducted by using TGA, respectively. Finally, the relationship between the C/H ratios and activation energies in the combustion kinetic models were investigated by ultimate analysis. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900855y

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