Deep oxidative desulfurization of fuels using peroxophosphomolybdate catalysts in ionic liquids / Lining He in Industrial & engineering chemistry research, Vol. 47 N°18 (Septembre 2008)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 47 N°18 (Septembre 2008) . - p. 6890–6895 Titre : Deep oxidative desulfurization of fuels using peroxophosphomolybdate catalysts in ionic liquids Type de document : texte imprimé Auteurs : Lining He, Auteur ; Huaming Li, Auteur ; Wenshuai Zhu, Auteur Année de publication : 2008 Article en page(s) : p. 6890–6895 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Ionic liquid Catalytic oxidation ECODS system Peroxophosphomolybdates Résumé : A combination of catalytic oxidation and extraction in ionic liquid (IL) was used for the removal of benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) from the model oil. Three peroxophosphomolybdates Q3{PO4[MoO(O2)2]4} (Q = [(C4H9)4N]+, [C14H29N(CH3)3]+ and [C16H33NC5H5]+) were synthesized and characterized. In the catalytic oxidation desulfurization (CODS) system containing the peroxophosphomolybdate with short alkyl chain ([(C4H9)4N]3{PO4[MoO(O2)2]4}) and H2O2, the process exhibited low sulfur removal (16.8%). However, with addition of 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4), the extraction and catalytic oxidative desulfurization (ECODS) system remarkably increased the removal of sulfur to 97.3% (with stoichiometric amounts of H2O2). The process was superior to the simple extraction with IL (16.3%). The results demonstrated that the ECODS system could deeply remove DBT from the model oil, and this desulfurization system could be recycled 4 times with slight decrease in activity. We also found that the catalysts with short alkyl chains exhibited higher catalytic activity than that with long alkyl chain in the ECODS system. Moreover, the reactivity of sulfur compounds decreased in the order of DBT > 4,6-DMDBT > BT. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800857a [article] Deep oxidative desulfurization of fuels using peroxophosphomolybdate catalysts in ionic liquids [texte imprimé] / Lining He, Auteur ; Huaming Li, Auteur ; Wenshuai Zhu, Auteur . - 2008 . - p. 6890–6895. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°18 (Septembre 2008) . - p. 6890–6895 Mots-clés : Ionic liquid Catalytic oxidation ECODS system Peroxophosphomolybdates Résumé : A combination of catalytic oxidation and extraction in ionic liquid (IL) was used for the removal of benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) from the model oil. Three peroxophosphomolybdates Q3{PO4[MoO(O2)2]4} (Q = [(C4H9)4N]+, [C14H29N(CH3)3]+ and [C16H33NC5H5]+) were synthesized and characterized. In the catalytic oxidation desulfurization (CODS) system containing the peroxophosphomolybdate with short alkyl chain ([(C4H9)4N]3{PO4[MoO(O2)2]4}) and H2O2, the process exhibited low sulfur removal (16.8%). However, with addition of 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4), the extraction and catalytic oxidative desulfurization (ECODS) system remarkably increased the removal of sulfur to 97.3% (with stoichiometric amounts of H2O2). The process was superior to the simple extraction with IL (16.3%). The results demonstrated that the ECODS system could deeply remove DBT from the model oil, and this desulfurization system could be recycled 4 times with slight decrease in activity. We also found that the catalysts with short alkyl chains exhibited higher catalytic activity than that with long alkyl chain in the ECODS system. Moreover, the reactivity of sulfur compounds decreased in the order of DBT > 4,6-DMDBT > BT. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800857a

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire