Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15

dc.creatorRivoira, Lorena Paola
dc.creatorVallés, Verónica Alejandra
dc.creatorMartínez, María Laura
dc.creatorYanika, Sa-ngasaeng
dc.creatorSiriporn, Jongpatiwut
dc.date.accessioned2024-04-17T20:41:47Z
dc.date.available2024-04-17T20:41:47Z
dc.date.issued2021
dc.description.abstractThe catalytic oXidation of different sulfur compounds, commonly present in liquid fuel, was studied over a series of ceria and ceria-zirconium based oXidation mesoporous catalysts. SBA-15 was synthesized using sol-gel method and Ce and Ce-Zr were added by two different procedures: i) directly during the synthesis and ii) via post- synthesis method. The catalysts were characterized by XRD, N2 adsorption isotherms, XPS, DRUV-Vis, TEM, SEM and Py-FTIR. Low angle XRD, N2 isotherms and TEM confirmed that the structure was not changed after metal incorporation. Wide angle XRD, UV–vis-DRS, XPS and TEM determined that the catalysts prepared by direct synthesis presented higher dispersion of Ce oXides, smaller particle size and isolated Zr4+ species. FTIR of adsorbed/desorbed pyridine indicated that zirconium as promoter increases the Lewis acidity of the catalysts, especially during direct synthesis. Ce-Zr-SBA-15 catalyst prepared by direct synthesis was very active in the oXidation of dibenzothiophene, 4,6-dimethyl dibenzothiophene and benzothiophene using hydrogen peroXide (H2O2) as oXidant agent and acetonitrile as polar solvent. The effect of acidity in the catalyst, hydrogen peroXide concentration and temperature was studied. The deactivation test demonstrated that the catalyst is stable and adequate for the industrial process.es_ES
dc.description.affiliationFil: Rivoira, Lorena. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.es_ES
dc.description.affiliationFil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.es_ES
dc.description.affiliationFil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.es_ES
dc.description.affiliationFil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.es_ES
dc.description.affiliationFil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.es_ES
dc.description.peerreviewedPeer Reviewedes_ES
dc.formatpdfes_ES
dc.identifier.doi-
dc.identifier.urihttp://hdl.handle.net/20.500.12272/10575
dc.language.isoenges_ES
dc.rightsopenAccesses_ES
dc.rights.holderRivoira, Lorena Paolaes_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.rights.uriAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.usehttps://creativecommons.org/licenses/by-nc-sa/4.0/es_ES
dc.subjectCerium oxideses_ES
dc.subjectZirconium promoteres_ES
dc.subject4,6-dimethyl dibenzothiophenees_ES
dc.subjectAcidityes_ES
dc.titleCatalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.type.versionpublisherVersiones_ES

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