Role of acidity in the ethylation of coking benzene with ethanol over nanosized HZSM-5 / Sun, Linping in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 506–514 Titre : Role of acidity in the ethylation of coking benzene with ethanol over nanosized HZSM-5 Type de document : texte imprimé Auteurs : Sun, Linping, Auteur ; Xinwen Guo, Auteur ; Liu, Min, Auteur Année de publication : 2010 Article en page(s) : pp 506–514 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Ethylation Zeolites Thermogravimetry Dimethylpyridine. Résumé : Ethylation of coking benzene, the product of coke oven gas, with ethanol over nanosized HZSM-5 zeolites poisoned by 2,6-dimethylpyridine has been investigated in a fixed-bed reactor. Pyridine infrared (Py-IR), amonia temperature programmed desorption (NH3-TPD), thermogravimetry (TG), acidity titration with a Hammett indicator, and cyclohexane and n-hexane adsorption were used to characterize the changes in acidity and porosity of the nanosized HZSM-5 zeolites poisoned by 2,6-dimethylpyridine. Conversion and product distribution depend strongly on the degree of catalyst poisoning. The acidity−activity correlation indicates that acid sites with pKa DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901218j [article] Role of acidity in the ethylation of coking benzene with ethanol over nanosized HZSM-5 [texte imprimé] / Sun, Linping, Auteur ; Xinwen Guo, Auteur ; Liu, Min, Auteur . - 2010 . - pp 506–514. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 506–514 Mots-clés : Ethylation Zeolites Thermogravimetry Dimethylpyridine. Résumé : Ethylation of coking benzene, the product of coke oven gas, with ethanol over nanosized HZSM-5 zeolites poisoned by 2,6-dimethylpyridine has been investigated in a fixed-bed reactor. Pyridine infrared (Py-IR), amonia temperature programmed desorption (NH3-TPD), thermogravimetry (TG), acidity titration with a Hammett indicator, and cyclohexane and n-hexane adsorption were used to characterize the changes in acidity and porosity of the nanosized HZSM-5 zeolites poisoned by 2,6-dimethylpyridine. Conversion and product distribution depend strongly on the degree of catalyst poisoning. The acidity−activity correlation indicates that acid sites with pKa DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901218j

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire