Stability of cobalt supported on ZrO2 catalysts for methane combustion

Autores
Milt, Viviana Guadalupe; Lombardo, Eduardo Agustin; Ulla, Maria Alicia del H.
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cobalt supported catalysts were prepared by two different techniques: atomic layer epitaxy (ALE) and wet impregnation. Either ZrO2 or La/ZrO2 (La-doped ZrO2) were used as supports. The solids were characterized by XRD, TPR and XPS before and after hydrothermal and catalytic stability tests (TOS: 150 h, 970 K). The most active catalysts were those in which cobalt was incorporated using the epitaxial growth technique. Moreover, the initial activity of cobalt supported on ZrO2 by ALE was significantly higher than that on La/ZrO2. But, after maintaining the former catalysts for 150 h at 970K on stream (stability est), their initial high activities significantly decreased. On the other hand, when Co was supported on La-doped ZrO2 the resulting catalysts became much more stable. Combining the catalytic results with the characterization information a simple model is proposed that rationalizes the behavior of these solids.
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Ulla, Maria Alicia del H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
Ale
Cobalt
Zirconia
Methane Combustion
Aging
Stability
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:11336/40091
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Stability of cobalt supported on ZrO2 catalysts for methane combustionMilt, Viviana GuadalupeLombardo, Eduardo AgustinUlla, Maria Alicia del H.AleCobaltZirconiaMethane CombustionAgingStabilityhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Cobalt supported catalysts were prepared by two different techniques: atomic layer epitaxy (ALE) and wet impregnation. Either ZrO2 or La/ZrO2 (La-doped ZrO2) were used as supports. The solids were characterized by XRD, TPR and XPS before and after hydrothermal and catalytic stability tests (TOS: 150 h, 970 K). The most active catalysts were those in which cobalt was incorporated using the epitaxial growth technique. Moreover, the initial activity of cobalt supported on ZrO2 by ALE was significantly higher than that on La/ZrO2. But, after maintaining the former catalysts for 150 h at 970K on stream (stability est), their initial high activities significantly decreased. On the other hand, when Co was supported on La-doped ZrO2 the resulting catalysts became much more stable. Combining the catalytic results with the characterization information a simple model is proposed that rationalizes the behavior of these solids.Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Ulla, Maria Alicia del H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaElsevier Science2002-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/40091Milt, Viviana Guadalupe; Lombardo, Eduardo Agustin; Ulla, Maria Alicia del H.; Stability of cobalt supported on ZrO2 catalysts for methane combustion; Elsevier Science; Applied Catalysis B: Environmental; 37; 1; 4-2002; 63-730926-3373CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0926-3373(01)00327-7info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926337301003277info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:51Zoai:ri.conicet.gov.ar:11336/40091instacron: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:34982025-09-29 09:59:52.138CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stability of cobalt supported on ZrO2 catalysts for methane combustion
title Stability of cobalt supported on ZrO2 catalysts for methane combustion
spellingShingle Stability of cobalt supported on ZrO2 catalysts for methane combustion
Milt, Viviana Guadalupe
Ale
Cobalt
Zirconia
Methane Combustion
Aging
Stability
title_short Stability of cobalt supported on ZrO2 catalysts for methane combustion
title_full Stability of cobalt supported on ZrO2 catalysts for methane combustion
title_fullStr Stability of cobalt supported on ZrO2 catalysts for methane combustion
title_full_unstemmed Stability of cobalt supported on ZrO2 catalysts for methane combustion
title_sort Stability of cobalt supported on ZrO2 catalysts for methane combustion
dc.creator.none.fl_str_mv Milt, Viviana Guadalupe
Lombardo, Eduardo Agustin
Ulla, Maria Alicia del H.
author Milt, Viviana Guadalupe
author_facet Milt, Viviana Guadalupe
Lombardo, Eduardo Agustin
Ulla, Maria Alicia del H.
author_role author
author2 Lombardo, Eduardo Agustin
Ulla, Maria Alicia del H.
author2_role author
author
dc.subject.none.fl_str_mv Ale
Cobalt
Zirconia
Methane Combustion
Aging
Stability
topic Ale
Cobalt
Zirconia
Methane Combustion
Aging
Stability
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Cobalt supported catalysts were prepared by two different techniques: atomic layer epitaxy (ALE) and wet impregnation. Either ZrO2 or La/ZrO2 (La-doped ZrO2) were used as supports. The solids were characterized by XRD, TPR and XPS before and after hydrothermal and catalytic stability tests (TOS: 150 h, 970 K). The most active catalysts were those in which cobalt was incorporated using the epitaxial growth technique. Moreover, the initial activity of cobalt supported on ZrO2 by ALE was significantly higher than that on La/ZrO2. But, after maintaining the former catalysts for 150 h at 970K on stream (stability est), their initial high activities significantly decreased. On the other hand, when Co was supported on La-doped ZrO2 the resulting catalysts became much more stable. Combining the catalytic results with the characterization information a simple model is proposed that rationalizes the behavior of these solids.
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Ulla, Maria Alicia del H.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Cobalt supported catalysts were prepared by two different techniques: atomic layer epitaxy (ALE) and wet impregnation. Either ZrO2 or La/ZrO2 (La-doped ZrO2) were used as supports. The solids were characterized by XRD, TPR and XPS before and after hydrothermal and catalytic stability tests (TOS: 150 h, 970 K). The most active catalysts were those in which cobalt was incorporated using the epitaxial growth technique. Moreover, the initial activity of cobalt supported on ZrO2 by ALE was significantly higher than that on La/ZrO2. But, after maintaining the former catalysts for 150 h at 970K on stream (stability est), their initial high activities significantly decreased. On the other hand, when Co was supported on La-doped ZrO2 the resulting catalysts became much more stable. Combining the catalytic results with the characterization information a simple model is proposed that rationalizes the behavior of these solids.
publishDate 2002
dc.date.none.fl_str_mv 2002-04
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/11336/40091
Milt, Viviana Guadalupe; Lombardo, Eduardo Agustin; Ulla, Maria Alicia del H.; Stability of cobalt supported on ZrO2 catalysts for methane combustion; Elsevier Science; Applied Catalysis B: Environmental; 37; 1; 4-2002; 63-73
0926-3373
CONICET Digital
CONICET
url http://hdl.handle.net/11336/40091
identifier_str_mv Milt, Viviana Guadalupe; Lombardo, Eduardo Agustin; Ulla, Maria Alicia del H.; Stability of cobalt supported on ZrO2 catalysts for methane combustion; Elsevier Science; Applied Catalysis B: Environmental; 37; 1; 4-2002; 63-73
0926-3373
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/S0926-3373(01)00327-7
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926337301003277
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
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 13.070432

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