Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts

Cobalt oxide based catalysts with three different active phase configurations, namely bulk, alumina supported and cerium-doped Co3O4 samples were examined for the complete oxidation of methane under conditions similar to those found in the exhaust of VNG engines. The structural and redox properties...

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Autores: Choya Atencia, Andoni, De Rivas Martín, Beatriz, González Velasco, Juan Ramón, Gutiérrez Ortiz, José Ignacio, López Fonseca, Rubén
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/63809
Acceso en línea:http://hdl.handle.net/10810/63809
Access Level:acceso abierto
Palabra clave:catalytic combustion
methane
cobalt oxide
cerium doping
oxygen mobility
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spelling Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalystsChoya Atencia, AndoniDe Rivas Martín, BeatrizGonzález Velasco, Juan RamónGutiérrez Ortiz, José IgnacioLópez Fonseca, Rubéncatalytic combustionmethanecobalt oxidecerium dopingoxygen mobilityCobalt oxide based catalysts with three different active phase configurations, namely bulk, alumina supported and cerium-doped Co3O4 samples were examined for the complete oxidation of methane under conditions similar to those found in the exhaust of VNG engines. The structural and redox properties of the resulting catalysts were determined by N2 adsorption-desorption, WDXRF, ICP-AES, X-Ray diffraction, temperature-programmed reactions, UV–vis-NIR DRS, XPS and Raman spectroscopy. Alumina-supported catalysts (10–40%wt. Co) were found to be less active, since the strong interactions between the alumina and the Co3O4 active phase were highly detrimental for the redox properties of these catalysts. On the other hand, doping with cerium (10%wt.) led to an increased inherent activity of the Co 3 O4 phase by distorting the spinel lattice, which resulted in improved structural and redox properties and enhanced mobility of the oxygen species within the spinel lattice. These catalysts were also stable over a prolonged period of time under both dry and humid conditions (150 h).Ministry of Economy and Competitiveness (CTQ2016-80253-R) // Basque Government (IT657-13)Elsevier202420242018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/63809reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/CTQ2016-80253-R/https://doi.org/10.1016/j.apcatb.2018.06.050info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseoai:addi.ehu.eus:10810/638092026-06-18T09:23:17Z
dc.title.none.fl_str_mv Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
title Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
spellingShingle Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
Choya Atencia, Andoni
catalytic combustion
methane
cobalt oxide
cerium doping
oxygen mobility
title_short Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
title_full Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
title_fullStr Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
title_full_unstemmed Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
title_sort Oxidation of residual methane from VNG vehicles over Co3O4-based catalysts: Comparison among bulk, Al2O3-supported and Ce-doped catalysts
dc.creator.none.fl_str_mv Choya Atencia, Andoni
De Rivas Martín, Beatriz
González Velasco, Juan Ramón
Gutiérrez Ortiz, José Ignacio
López Fonseca, Rubén
author Choya Atencia, Andoni
author_facet Choya Atencia, Andoni
De Rivas Martín, Beatriz
González Velasco, Juan Ramón
Gutiérrez Ortiz, José Ignacio
López Fonseca, Rubén
author_role author
author2 De Rivas Martín, Beatriz
González Velasco, Juan Ramón
Gutiérrez Ortiz, José Ignacio
López Fonseca, Rubén
author2_role author
author
author
author
dc.subject.none.fl_str_mv catalytic combustion
methane
cobalt oxide
cerium doping
oxygen mobility
topic catalytic combustion
methane
cobalt oxide
cerium doping
oxygen mobility
description Cobalt oxide based catalysts with three different active phase configurations, namely bulk, alumina supported and cerium-doped Co3O4 samples were examined for the complete oxidation of methane under conditions similar to those found in the exhaust of VNG engines. The structural and redox properties of the resulting catalysts were determined by N2 adsorption-desorption, WDXRF, ICP-AES, X-Ray diffraction, temperature-programmed reactions, UV–vis-NIR DRS, XPS and Raman spectroscopy. Alumina-supported catalysts (10–40%wt. Co) were found to be less active, since the strong interactions between the alumina and the Co3O4 active phase were highly detrimental for the redox properties of these catalysts. On the other hand, doping with cerium (10%wt.) led to an increased inherent activity of the Co 3 O4 phase by distorting the spinel lattice, which resulted in improved structural and redox properties and enhanced mobility of the oxygen species within the spinel lattice. These catalysts were also stable over a prolonged period of time under both dry and humid conditions (150 h).
publishDate 2018
dc.date.none.fl_str_mv 2018
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/63809
url http://hdl.handle.net/10810/63809
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/CTQ2016-80253-R/
https://doi.org/10.1016/j.apcatb.2018.06.050
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
This manuscript version is made available under the CC-BY-NC-ND 4.0 license
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
This manuscript version is made available under the CC-BY-NC-ND 4.0 license
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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