Study on alkylation of toluene with tert - butanol over La2O3 - modified HY zeolite / Lin-bo Chen in Industrial & engineering chemistry research, Vol. 49 N° 16 (Août 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7234–7238 Titre : Study on alkylation of toluene with tert - butanol over La2O3 - modified HY zeolite Type de document : texte imprimé Auteurs : Lin-bo Chen, Auteur ; Hong-jun Dong, Auteur ; Shi Li, Auteur Année de publication : 2010 Article en page(s) : pp. 7234–7238 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Zeolite catalysts Résumé : Alkylation of toluene with tert-butanol was investigated over La2O3-modified HY zeolite catalysts in the microfixed bed reactor. The affect factors of conversion of toluene and the selectivity of tert-butyltoluene were studied. The main reaction products have been identified as p-tert-butyltoluene and m-tert-butyltoluene, La2O3 modified HY zeolite catalyst can significantly improve the selectivity of p-tert-butyltoluene. The result showed that 5% La2O3-modified HY zeolite catalyst was catalytic active (32.4% conversion of toluene), with para-selectivity near 82% at 473 K after 8 h. At the same time the catalysts were characterized by the X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. The FT-IR results showed that the modifier could increase the concentration of weak B acid of HY zeolite and obviously improve the selectivity of p-tert-butyltoluene. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100695k [article] Study on alkylation of toluene with tert - butanol over La2O3 - modified HY zeolite [texte imprimé] / Lin-bo Chen, Auteur ; Hong-jun Dong, Auteur ; Shi Li, Auteur . - 2010 . - pp. 7234–7238. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7234–7238 Mots-clés : Zeolite catalysts Résumé : Alkylation of toluene with tert-butanol was investigated over La2O3-modified HY zeolite catalysts in the microfixed bed reactor. The affect factors of conversion of toluene and the selectivity of tert-butyltoluene were studied. The main reaction products have been identified as p-tert-butyltoluene and m-tert-butyltoluene, La2O3 modified HY zeolite catalyst can significantly improve the selectivity of p-tert-butyltoluene. The result showed that 5% La2O3-modified HY zeolite catalyst was catalytic active (32.4% conversion of toluene), with para-selectivity near 82% at 473 K after 8 h. At the same time the catalysts were characterized by the X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. The FT-IR results showed that the modifier could increase the concentration of weak B acid of HY zeolite and obviously improve the selectivity of p-tert-butyltoluene. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100695k

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire