Effect of methanol on catalytic performance of HY zeolite for desulfurization of FCC gasoline by alkylation / Rong Wang in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6320-6326 Titre : Effect of methanol on catalytic performance of HY zeolite for desulfurization of FCC gasoline by alkylation Type de document : texte imprimé Auteurs : Rong Wang, Auteur ; Yonghong Li, Auteur ; Benshuai Guo, Auteur Année de publication : 2012 Article en page(s) : pp. 6320-6326 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Alkylation Desulfurization Zeolite Catalytic reaction Résumé : Desulfurization of FCC gasoline by alkylation over a solid acid catalyst is considered to be a viable and less costly path to meet environmental regulations of sulfur emissions. However, side reactions in this process lead to significant levels of coke which greatly reduce the catalyst lifetime. In this paper, experiments were designed in both real and simulated gasoline to investigate the effect of different concentrations of methanol on the catalytic behavior of HY zeolite in the alkylation process for desulfurization. The result showed that the presence of an appropriate amount of methanol in FCC gasoline (about 5 wt % of the feed) appeared to improve the catalyst selectivity for the alkylation of thiophenic compounds by decreasing the conversion of olefins to oligomers, which was favorable for prolonging the catalyst lifetime. Moreover, a deep investigation was also carried out by a theoretical calculation method of DFT to explain the reason for the advantageous effect of methanol on the catalyst performance in the desulfurization process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867283 [article] Effect of methanol on catalytic performance of HY zeolite for desulfurization of FCC gasoline by alkylation [texte imprimé] / Rong Wang, Auteur ; Yonghong Li, Auteur ; Benshuai Guo, Auteur . - 2012 . - pp. 6320-6326. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6320-6326 Mots-clés : Alkylation Desulfurization Zeolite Catalytic reaction Résumé : Desulfurization of FCC gasoline by alkylation over a solid acid catalyst is considered to be a viable and less costly path to meet environmental regulations of sulfur emissions. However, side reactions in this process lead to significant levels of coke which greatly reduce the catalyst lifetime. In this paper, experiments were designed in both real and simulated gasoline to investigate the effect of different concentrations of methanol on the catalytic behavior of HY zeolite in the alkylation process for desulfurization. The result showed that the presence of an appropriate amount of methanol in FCC gasoline (about 5 wt % of the feed) appeared to improve the catalyst selectivity for the alkylation of thiophenic compounds by decreasing the conversion of olefins to oligomers, which was favorable for prolonging the catalyst lifetime. Moreover, a deep investigation was also carried out by a theoretical calculation method of DFT to explain the reason for the advantageous effect of methanol on the catalyst performance in the desulfurization process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867283

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