Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts

Autores
Milt, Viviana Guadalupe; Ivanova, S.; Sanz, O.; Domínguez, M. I.; Corrales, A.; Odriozola, J.A.; Centeno, M.A.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Metallic supported structured catalysts were obtained by washcoating AluchromYHf monoliths with an Au/TiO2 catalyst. The powder catalyst was synthesized by DAE (direct anionic exchange) method. Using this catalyst, a stable slurry was prepared and used to washcoat the monoliths. TEM and SEM studies revealed that gold nanoparticles in the Au/TiO2 powder catalyst had an average diameter of 3–4 nm, but during the preparation of the structured catalyst, aggregate Au particles of the slurry reached diameters of 9 nm. Before coating, Aluchrom YHf monoliths were thermally treated to generate a homogeneous and well-adhered oxide rough surface layer, mainly composed of -Al2O3 whiskers, which favored the anchoring of the catalyst. The catalytic layer deposited was well attached and contained not only the Au/TiO2 catalyst but also metallic oxides formed from stainless steel components that diffused through the oxide scale. The structural characterization was performed by XRD, XRF, TEM, SEM, GD-OES and SBET.
The catalytic activity of the powder and structured catalysts was tested in the oxidation of the CO
reaction. Catalysts demonstrated to be active at room temperature. After a first activation run, and in spite of their larger gold particle size, the catalytic activities of the structured catalysts overcame those of the powder catalyst. This improvement is probably due to the segregation of the transition metal oxides toward the surface oxide scale.
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera"; Argentina
Fil: Ivanova, S.. Universidad de Sevilla; España
Fil: Sanz, O.. Universidad de Sevilla; España
Fil: Domínguez, M. I.. Universidad de Sevilla; España
Fil: Corrales, A.. Universidad de Sevilla; España
Fil: Odriozola, J.A.. Universidad de Sevilla; España
Fil: Centeno, M.A.. Universidad de Sevilla; España
Materia
Structured Catalysts
Au/Tio2
Co Oxidation
Metallic Catalysts
Aluchrom Yhf
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:11336/21225
Acceder
id CONICETDig_93258a3b7a5fbe6eb4ebb89ca8f7fb53
oai_identifier_str oai:ri.conicet.gov.ar:11336/21225
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalystsMilt, Viviana GuadalupeIvanova, S.Sanz, O.Domínguez, M. I.Corrales, A.Odriozola, J.A.Centeno, M.A.Structured CatalystsAu/Tio2Co OxidationMetallic CatalystsAluchrom Yhfhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Metallic supported structured catalysts were obtained by washcoating AluchromYHf monoliths with an Au/TiO2 catalyst. The powder catalyst was synthesized by DAE (direct anionic exchange) method. Using this catalyst, a stable slurry was prepared and used to washcoat the monoliths. TEM and SEM studies revealed that gold nanoparticles in the Au/TiO2 powder catalyst had an average diameter of 3–4 nm, but during the preparation of the structured catalyst, aggregate Au particles of the slurry reached diameters of 9 nm. Before coating, Aluchrom YHf monoliths were thermally treated to generate a homogeneous and well-adhered oxide rough surface layer, mainly composed of -Al2O3 whiskers, which favored the anchoring of the catalyst. The catalytic layer deposited was well attached and contained not only the Au/TiO2 catalyst but also metallic oxides formed from stainless steel components that diffused through the oxide scale. The structural characterization was performed by XRD, XRF, TEM, SEM, GD-OES and SBET.<br />The catalytic activity of the powder and structured catalysts was tested in the oxidation of the CO<br />reaction. Catalysts demonstrated to be active at room temperature. After a first activation run, and in spite of their larger gold particle size, the catalytic activities of the structured catalysts overcame those of the powder catalyst. This improvement is probably due to the segregation of the transition metal oxides toward the surface oxide scale.Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera"; ArgentinaFil: Ivanova, S.. Universidad de Sevilla; EspañaFil: Sanz, O.. Universidad de Sevilla; EspañaFil: Domínguez, M. I.. Universidad de Sevilla; EspañaFil: Corrales, A.. Universidad de Sevilla; EspañaFil: Odriozola, J.A.. Universidad de Sevilla; EspañaFil: Centeno, M.A.. Universidad de Sevilla; EspañaElsevier2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21225Milt, Viviana Guadalupe; Ivanova, S.; Sanz, O.; Domínguez, M. I.; Corrales, A.; et al.; Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts; Elsevier; Applied Surface Science; 270; 1-2013; 169-1770169-4332CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apsusc.2012.12.159info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S016943321300007Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:11:33Zoai:ri.conicet.gov.ar:11336/21225instacron: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 10:11:33.433CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
title Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
spellingShingle Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
Milt, Viviana Guadalupe
Structured Catalysts
Au/Tio2
Co Oxidation
Metallic Catalysts
Aluchrom Yhf
title_short Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
title_full Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
title_fullStr Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
title_full_unstemmed Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
title_sort Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts
dc.creator.none.fl_str_mv Milt, Viviana Guadalupe
Ivanova, S.
Sanz, O.
Domínguez, M. I.
Corrales, A.
Odriozola, J.A.
Centeno, M.A.
author Milt, Viviana Guadalupe
author_facet Milt, Viviana Guadalupe
Ivanova, S.
Sanz, O.
Domínguez, M. I.
Corrales, A.
Odriozola, J.A.
Centeno, M.A.
author_role author
author2 Ivanova, S.
Sanz, O.
Domínguez, M. I.
Corrales, A.
Odriozola, J.A.
Centeno, M.A.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Structured Catalysts
Au/Tio2
Co Oxidation
Metallic Catalysts
Aluchrom Yhf
topic Structured Catalysts
Au/Tio2
Co Oxidation
Metallic Catalysts
Aluchrom Yhf
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Metallic supported structured catalysts were obtained by washcoating AluchromYHf monoliths with an Au/TiO2 catalyst. The powder catalyst was synthesized by DAE (direct anionic exchange) method. Using this catalyst, a stable slurry was prepared and used to washcoat the monoliths. TEM and SEM studies revealed that gold nanoparticles in the Au/TiO2 powder catalyst had an average diameter of 3–4 nm, but during the preparation of the structured catalyst, aggregate Au particles of the slurry reached diameters of 9 nm. Before coating, Aluchrom YHf monoliths were thermally treated to generate a homogeneous and well-adhered oxide rough surface layer, mainly composed of -Al2O3 whiskers, which favored the anchoring of the catalyst. The catalytic layer deposited was well attached and contained not only the Au/TiO2 catalyst but also metallic oxides formed from stainless steel components that diffused through the oxide scale. The structural characterization was performed by XRD, XRF, TEM, SEM, GD-OES and SBET.<br />The catalytic activity of the powder and structured catalysts was tested in the oxidation of the CO<br />reaction. Catalysts demonstrated to be active at room temperature. After a first activation run, and in spite of their larger gold particle size, the catalytic activities of the structured catalysts overcame those of the powder catalyst. This improvement is probably due to the segregation of the transition metal oxides toward the surface oxide scale.
Fil: Milt, Viviana Guadalupe. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones En Catalisis y Petroquímica "ing. Jose Miguel Parera"; Argentina
Fil: Ivanova, S.. Universidad de Sevilla; España
Fil: Sanz, O.. Universidad de Sevilla; España
Fil: Domínguez, M. I.. Universidad de Sevilla; España
Fil: Corrales, A.. Universidad de Sevilla; España
Fil: Odriozola, J.A.. Universidad de Sevilla; España
Fil: Centeno, M.A.. Universidad de Sevilla; España
description Metallic supported structured catalysts were obtained by washcoating AluchromYHf monoliths with an Au/TiO2 catalyst. The powder catalyst was synthesized by DAE (direct anionic exchange) method. Using this catalyst, a stable slurry was prepared and used to washcoat the monoliths. TEM and SEM studies revealed that gold nanoparticles in the Au/TiO2 powder catalyst had an average diameter of 3–4 nm, but during the preparation of the structured catalyst, aggregate Au particles of the slurry reached diameters of 9 nm. Before coating, Aluchrom YHf monoliths were thermally treated to generate a homogeneous and well-adhered oxide rough surface layer, mainly composed of -Al2O3 whiskers, which favored the anchoring of the catalyst. The catalytic layer deposited was well attached and contained not only the Au/TiO2 catalyst but also metallic oxides formed from stainless steel components that diffused through the oxide scale. The structural characterization was performed by XRD, XRF, TEM, SEM, GD-OES and SBET.<br />The catalytic activity of the powder and structured catalysts was tested in the oxidation of the CO<br />reaction. Catalysts demonstrated to be active at room temperature. After a first activation run, and in spite of their larger gold particle size, the catalytic activities of the structured catalysts overcame those of the powder catalyst. This improvement is probably due to the segregation of the transition metal oxides toward the surface oxide scale.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/21225
Milt, Viviana Guadalupe; Ivanova, S.; Sanz, O.; Domínguez, M. I.; Corrales, A.; et al.; Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts; Elsevier; Applied Surface Science; 270; 1-2013; 169-177
0169-4332
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21225
identifier_str_mv Milt, Viviana Guadalupe; Ivanova, S.; Sanz, O.; Domínguez, M. I.; Corrales, A.; et al.; Au/TiO2 supported on ferritic stainless steel monoliths as CO oxidation catalysts; Elsevier; Applied Surface Science; 270; 1-2013; 169-177
0169-4332
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.apsusc.2012.12.159
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S016943321300007X
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 Elsevier
publisher.none.fl_str_mv Elsevier
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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