CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts

Autores
Gómez, Leticia Ester; Tiscornia, Ines Silvia; Boix, Alicia Viviana; Miro, Eduardo Ernesto
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cordierite monoliths washcoated with Co/CeO2 catalysts prepared from different methods were studied for the CO preferential oxidation reaction. Powder catalysts were also studied for the sake of comparison and in order to select the best formulations to prepare the catalytic coatings. High ? Co loaded catalysts resulted in good CO conversions and they showed Co3O4 as the main cobalt containing phase. A powder catalyst with low Co loading (below the solubility limit of cobalt in CeO2) was also prepared, but the behavior in the reaction under study was poor indicating that the segregation of Co3O4 was beneficial. For high Co loaded powders (10 wt.%), two different ways were used for the catalysts under preparation, namely wetness impregnation (WI) and co-precipitation (CP). The Co10(CP) catalyst showed somewhat higher CO conversions than the Co10(WI), probably due to the better redox capacity of the former, as seen in the TPR experiments. Taking into account these results, three cordierite ? washcoated catalysts were prepared with high Co loading. C1 and C2 were obtained by CeO2 washcoating followed by cobalt impregnation. In the first case, Ce oxide particles were obtained from a nitrate solution and in the second, a Nyacol suspension was used. A third sample was prepared (C3) using a slurry of a co-precipitated Co10(CP) catalyst. Monolith C3 showed the best CO conversion, although the difference with the other catalysts was not so evident as the one observed for the powder formulations. The mechanical stability, measured by ultrasound tests, was good for all monolithic catalysts and monolith C1 showed no-deactivation after 100 hours of time-on-stream at 190°C. The structured catalysts prepared were characterized by XRD, TPR, LRS, SEM and XPS, showing that their physical-chemistry features depend on the preparation method and Co loading.
Fil: Gómez, Leticia Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Tiscornia, Ines Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Boix, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
Co-Ceo2
Monolithic Catalyts
Coprox
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/53003
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/53003
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalystsGómez, Leticia EsterTiscornia, Ines SilviaBoix, Alicia VivianaMiro, Eduardo ErnestoCo-Ceo2Monolithic CatalytsCoproxhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Cordierite monoliths washcoated with Co/CeO2 catalysts prepared from different methods were studied for the CO preferential oxidation reaction. Powder catalysts were also studied for the sake of comparison and in order to select the best formulations to prepare the catalytic coatings. High ? Co loaded catalysts resulted in good CO conversions and they showed Co3O4 as the main cobalt containing phase. A powder catalyst with low Co loading (below the solubility limit of cobalt in CeO2) was also prepared, but the behavior in the reaction under study was poor indicating that the segregation of Co3O4 was beneficial. For high Co loaded powders (10 wt.%), two different ways were used for the catalysts under preparation, namely wetness impregnation (WI) and co-precipitation (CP). The Co10(CP) catalyst showed somewhat higher CO conversions than the Co10(WI), probably due to the better redox capacity of the former, as seen in the TPR experiments. Taking into account these results, three cordierite ? washcoated catalysts were prepared with high Co loading. C1 and C2 were obtained by CeO2 washcoating followed by cobalt impregnation. In the first case, Ce oxide particles were obtained from a nitrate solution and in the second, a Nyacol suspension was used. A third sample was prepared (C3) using a slurry of a co-precipitated Co10(CP) catalyst. Monolith C3 showed the best CO conversion, although the difference with the other catalysts was not so evident as the one observed for the powder formulations. The mechanical stability, measured by ultrasound tests, was good for all monolithic catalysts and monolith C1 showed no-deactivation after 100 hours of time-on-stream at 190°C. The structured catalysts prepared were characterized by XRD, TPR, LRS, SEM and XPS, showing that their physical-chemistry features depend on the preparation method and Co loading.Fil: Gómez, Leticia Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Tiscornia, Ines Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Boix, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaPergamon-Elsevier Science Ltd2012-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/53003Gómez, Leticia Ester; Tiscornia, Ines Silvia; Boix, Alicia Viviana; Miro, Eduardo Ernesto; CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 37; 3-2012; 14812-148190360-3199CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijhydene.2012.01.159info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:02:37Zoai:ri.conicet.gov.ar:11336/53003instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:02:37.938CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
title CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
spellingShingle CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
Gómez, Leticia Ester
Co-Ceo2
Monolithic Catalyts
Coprox
title_short CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
title_full CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
title_fullStr CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
title_full_unstemmed CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
title_sort CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts
dc.creator.none.fl_str_mv Gómez, Leticia Ester
Tiscornia, Ines Silvia
Boix, Alicia Viviana
Miro, Eduardo Ernesto
author Gómez, Leticia Ester
author_facet Gómez, Leticia Ester
Tiscornia, Ines Silvia
Boix, Alicia Viviana
Miro, Eduardo Ernesto
author_role author
author2 Tiscornia, Ines Silvia
Boix, Alicia Viviana
Miro, Eduardo Ernesto
author2_role author
author
author
dc.subject.none.fl_str_mv Co-Ceo2
Monolithic Catalyts
Coprox
topic Co-Ceo2
Monolithic Catalyts
Coprox
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Cordierite monoliths washcoated with Co/CeO2 catalysts prepared from different methods were studied for the CO preferential oxidation reaction. Powder catalysts were also studied for the sake of comparison and in order to select the best formulations to prepare the catalytic coatings. High ? Co loaded catalysts resulted in good CO conversions and they showed Co3O4 as the main cobalt containing phase. A powder catalyst with low Co loading (below the solubility limit of cobalt in CeO2) was also prepared, but the behavior in the reaction under study was poor indicating that the segregation of Co3O4 was beneficial. For high Co loaded powders (10 wt.%), two different ways were used for the catalysts under preparation, namely wetness impregnation (WI) and co-precipitation (CP). The Co10(CP) catalyst showed somewhat higher CO conversions than the Co10(WI), probably due to the better redox capacity of the former, as seen in the TPR experiments. Taking into account these results, three cordierite ? washcoated catalysts were prepared with high Co loading. C1 and C2 were obtained by CeO2 washcoating followed by cobalt impregnation. In the first case, Ce oxide particles were obtained from a nitrate solution and in the second, a Nyacol suspension was used. A third sample was prepared (C3) using a slurry of a co-precipitated Co10(CP) catalyst. Monolith C3 showed the best CO conversion, although the difference with the other catalysts was not so evident as the one observed for the powder formulations. The mechanical stability, measured by ultrasound tests, was good for all monolithic catalysts and monolith C1 showed no-deactivation after 100 hours of time-on-stream at 190°C. The structured catalysts prepared were characterized by XRD, TPR, LRS, SEM and XPS, showing that their physical-chemistry features depend on the preparation method and Co loading.
Fil: Gómez, Leticia Ester. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Tiscornia, Ines Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Boix, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Miro, Eduardo Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Cordierite monoliths washcoated with Co/CeO2 catalysts prepared from different methods were studied for the CO preferential oxidation reaction. Powder catalysts were also studied for the sake of comparison and in order to select the best formulations to prepare the catalytic coatings. High ? Co loaded catalysts resulted in good CO conversions and they showed Co3O4 as the main cobalt containing phase. A powder catalyst with low Co loading (below the solubility limit of cobalt in CeO2) was also prepared, but the behavior in the reaction under study was poor indicating that the segregation of Co3O4 was beneficial. For high Co loaded powders (10 wt.%), two different ways were used for the catalysts under preparation, namely wetness impregnation (WI) and co-precipitation (CP). The Co10(CP) catalyst showed somewhat higher CO conversions than the Co10(WI), probably due to the better redox capacity of the former, as seen in the TPR experiments. Taking into account these results, three cordierite ? washcoated catalysts were prepared with high Co loading. C1 and C2 were obtained by CeO2 washcoating followed by cobalt impregnation. In the first case, Ce oxide particles were obtained from a nitrate solution and in the second, a Nyacol suspension was used. A third sample was prepared (C3) using a slurry of a co-precipitated Co10(CP) catalyst. Monolith C3 showed the best CO conversion, although the difference with the other catalysts was not so evident as the one observed for the powder formulations. The mechanical stability, measured by ultrasound tests, was good for all monolithic catalysts and monolith C1 showed no-deactivation after 100 hours of time-on-stream at 190°C. The structured catalysts prepared were characterized by XRD, TPR, LRS, SEM and XPS, showing that their physical-chemistry features depend on the preparation method and Co loading.
publishDate 2012
dc.date.none.fl_str_mv 2012-03
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/11336/53003
Gómez, Leticia Ester; Tiscornia, Ines Silvia; Boix, Alicia Viviana; Miro, Eduardo Ernesto; CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 37; 3-2012; 14812-14819
0360-3199
CONICET Digital
CONICET
url http://hdl.handle.net/11336/53003
identifier_str_mv Gómez, Leticia Ester; Tiscornia, Ines Silvia; Boix, Alicia Viviana; Miro, Eduardo Ernesto; CO preferential oxidation on cordierite monoliths coated with Co/CeO2 catalysts; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 37; 3-2012; 14812-14819
0360-3199
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijhydene.2012.01.159
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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