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Characterization and catalytic performance of deactivated and regenerated TS - 1 extrudates in a pilot plant of propene epoxidation / Yi Zuo in Industrial & engineering chemistry research, Vol. 51 N° 32 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10586-10594 Titre : Characterization and catalytic performance of deactivated and regenerated TS - 1 extrudates in a pilot plant of propene epoxidation Type de document : texte imprimé Auteurs : Yi Zuo, Auteur ; Mengli Wang, Auteur ; Wancang Song, Auteur Année de publication : 2012 Article en page(s) : pp. 10586-10594 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Epoxidation  Pilot  plant  Catalytic  reaction Résumé : TS-1 extrudates that were used for propene epoxidation in a pilot plant for about 1700 h deactivated partly. To study the reason for the deactivation, the deactivated and regenerated catalysts were investigated with X-ray diffraction analysis, Fourier-transform infrared, Ultraviolet—visible diffuse reflectance, thermogravimetry―differential thermogravimetry, N2 sorption, n-hexane adsorption, cyclohexane adsorption, and elemental analysis. The catalytic performance of the deactivated and regenerated TS-1 extrudates in the epoxidation of propene was evaluated in a fixed-bed reactor and in a batch reactor. The activity of the deactivated catalyst from the inlet of the pilot-plant reactor was higher than that from the outlet of the reactor in which more propene oxide oligomers were generated than in the pores of catalyst taken from the inlet of the reactor. External and in situ regeneration could reinstate the activity of the deactivated catalysts, while the in situ regeneration was preferred. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259762 [article] Characterization and catalytic performance of deactivated and regenerated TS - 1 extrudates in a pilot plant of propene epoxidation [texte imprimé] / Yi Zuo, Auteur ; Mengli Wang, Auteur ; Wancang Song, Auteur . - 2012 . - pp. 10586-10594. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10586-10594 Mots-clés : Epoxidation  Pilot  plant  Catalytic  reaction Résumé : TS-1 extrudates that were used for propene epoxidation in a pilot plant for about 1700 h deactivated partly. To study the reason for the deactivation, the deactivated and regenerated catalysts were investigated with X-ray diffraction analysis, Fourier-transform infrared, Ultraviolet—visible diffuse reflectance, thermogravimetry―differential thermogravimetry, N2 sorption, n-hexane adsorption, cyclohexane adsorption, and elemental analysis. The catalytic performance of the deactivated and regenerated TS-1 extrudates in the epoxidation of propene was evaluated in a fixed-bed reactor and in a batch reactor. The activity of the deactivated catalyst from the inlet of the pilot-plant reactor was higher than that from the outlet of the reactor in which more propene oxide oligomers were generated than in the pores of catalyst taken from the inlet of the reactor. External and in situ regeneration could reinstate the activity of the deactivated catalysts, while the in situ regeneration was preferred. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259762