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

Autores
Rivoira, Lorena Paola; Vallés, Verónica Alejandra; Martínez, María Laura; Yanika, Sa-ngasaeng; Siriporn, Jongpatiwut
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The 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.
Fil: Rivoira, Lorena. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.
Fil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.
Peer Reviewed
Materia
Cerium oxides
Zirconium promoter
4,6-dimethyl dibenzothiophene
Acidity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-04-17T20:41:47Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/10575
Acceder
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network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15Rivoira, Lorena PaolaVallés, Verónica AlejandraMartínez, María LauraYanika, Sa-ngasaengSiriporn, JongpatiwutCerium oxidesZirconium promoter4,6-dimethyl dibenzothiopheneAcidityThe 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.Fil: Rivoira, Lorena. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.Fil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.Fil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.Fil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.Peer Reviewed2024-04-17T20:41:47Z2024-04-17T20:41:47Z2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfhttp://hdl.handle.net/20.500.12272/10575-enginfo:eu-repo/semantics/openAccess2024-04-17T20:41:47Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalRivoira, Lorena Paolahttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-09-24T12:46:28Zoai:ria.utn.edu.ar:20.500.12272/10575instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:46:29.389Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
title Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
spellingShingle Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
Rivoira, Lorena Paola
Cerium oxides
Zirconium promoter
4,6-dimethyl dibenzothiophene
Acidity
title_short Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
title_full Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
title_fullStr Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
title_full_unstemmed Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
title_sort Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15
dc.creator.none.fl_str_mv Rivoira, Lorena Paola
Vallés, Verónica Alejandra
Martínez, María Laura
Yanika, Sa-ngasaeng
Siriporn, Jongpatiwut
author Rivoira, Lorena Paola
author_facet Rivoira, Lorena Paola
Vallés, Verónica Alejandra
Martínez, María Laura
Yanika, Sa-ngasaeng
Siriporn, Jongpatiwut
author_role author
author2 Vallés, Verónica Alejandra
Martínez, María Laura
Yanika, Sa-ngasaeng
Siriporn, Jongpatiwut
author2_role author
author
author
author
dc.subject.none.fl_str_mv Cerium oxides
Zirconium promoter
4,6-dimethyl dibenzothiophene
Acidity
topic Cerium oxides
Zirconium promoter
4,6-dimethyl dibenzothiophene
Acidity
dc.description.none.fl_txt_mv The 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.
Fil: Rivoira, Lorena. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Vallés, Verónica Alejandra. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Martínez, María Laura. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Centro de Investigación en Nanociencia y Nanotecnología. Córdoba; Argentina.
Fil: Yanika, Sa-ngasaeng. Chulalongkorn University. Bangkok: Thailand.
Fil: Siriporn, Jongpatiwut. Chulalongkorn University. Bangkok: Thailand.
Peer Reviewed
description The 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.
publishDate 2021
dc.date.none.fl_str_mv 2021
2024-04-17T20:41:47Z
2024-04-17T20:41:47Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12272/10575
-
url http://hdl.handle.net/20.500.12272/10575
identifier_str_mv -
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-04-17T20:41:47Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Rivoira, Lorena Paola
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-04-17T20:41:47Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Rivoira, Lorena Paola
https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.24418

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