Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation

Autores
Schmal, Martin; Scheunemann, Ricardo; Ribeiro, Nielson F.P.; Bengoa, Jose Fernando; Marchetti, Sergio Gustavo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Catalysts of Pt on Fe2O3 and mixed oxides FexZr(1−x)O2 were prepared for the selective CO + H2 oxidation. X-ray diffraction and Mössbauer spectroscopy showed -Fe2O3 in pure support, a solid solution for x = 0.25 and mixed oxides with segregated phases for higher “x” values. Mössbauer results showed also that with increasing the Zr content Zr4+ ions substitute the Fe3+ ions in the -Fe2O3 lattice, and also Fe3+ ions diffusing into the zirconia lattice. The Pt/Fe0.25Zr0.75O2(p) exhibited only Fe3+ inside the ZrO2 lattice. After reduction, Fe3O4 was found in the catalysts, which decreased with increasing zirconium loading. It is interesting to note that the corresponding precursor presents 83% of Fe3+ located in the ZrO2 lattice and the remaining 17% corresponds to hematite. Catalytic tests for the preferential oxidation of CO containing H2 showed maximum CO conversion at different temperatures after reaching total oxygen conversion. The CO conversion decreased with increasing iron content in the mixed oxide. The Pt/Fe2O3 catalyst is the most active compared to the other Pt/mixed oxide and Pt/ZrO2. Results showed the following order: Pt/Fe2O3(c) > Pt/Fe0.75Zr0.25O2(c) > Pt/Fe0.25Zr0.75O2(c) > Pt/ZrO2. The Pt/Fe0.25Zr0.75O2(c) presented high selectivity (56%) at 90 ◦C and is 2-fold higher compared to the Pt/Fe2O3 and Pt/ZrO2 catalyst.
Fil: Schmal, Martin. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; Brasil
Fil: Scheunemann, Ricardo. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; Brasil
Fil: Ribeiro, Nielson F.P.. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; Brasil
Fil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Materia
Mixed Oxides
Ironzirconia
Iron Catalyst
Mössbauer
Selox Reaction
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/4718
Acceder
id CONICETDig_e8f2917f86de44c05394cdb3cfc893fd
oai_identifier_str oai:ri.conicet.gov.ar:11336/4718
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidationSchmal, MartinScheunemann, Ricardo Ribeiro, Nielson F.P.Bengoa, Jose FernandoMarchetti, Sergio GustavoMixed OxidesIronzirconiaIron CatalystMössbauerSelox Reactionhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Catalysts of Pt on Fe2O3 and mixed oxides FexZr(1−x)O2 were prepared for the selective CO + H2 oxidation. X-ray diffraction and Mössbauer spectroscopy showed -Fe2O3 in pure support, a solid solution for x = 0.25 and mixed oxides with segregated phases for higher “x” values. Mössbauer results showed also that with increasing the Zr content Zr4+ ions substitute the Fe3+ ions in the -Fe2O3 lattice, and also Fe3+ ions diffusing into the zirconia lattice. The Pt/Fe0.25Zr0.75O2(p) exhibited only Fe3+ inside the ZrO2 lattice. After reduction, Fe3O4 was found in the catalysts, which decreased with increasing zirconium loading. It is interesting to note that the corresponding precursor presents 83% of Fe3+ located in the ZrO2 lattice and the remaining 17% corresponds to hematite. Catalytic tests for the preferential oxidation of CO containing H2 showed maximum CO conversion at different temperatures after reaching total oxygen conversion. The CO conversion decreased with increasing iron content in the mixed oxide. The Pt/Fe2O3 catalyst is the most active compared to the other Pt/mixed oxide and Pt/ZrO2. Results showed the following order: Pt/Fe2O3(c) > Pt/Fe0.75Zr0.25O2(c) > Pt/Fe0.25Zr0.75O2(c) > Pt/ZrO2. The Pt/Fe0.25Zr0.75O2(c) presented high selectivity (56%) at 90 ◦C and is 2-fold higher compared to the Pt/Fe2O3 and Pt/ZrO2 catalyst.Fil: Schmal, Martin. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; BrasilFil: Scheunemann, Ricardo. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; BrasilFil: Ribeiro, Nielson F.P.. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; BrasilFil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaElsevier Science2010-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4718Schmal, Martin; Scheunemann, Ricardo; Ribeiro, Nielson F.P.; Bengoa, Jose Fernando; Marchetti, Sergio Gustavo; Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation; Elsevier Science; Applied Catalysis A: General; 392; 1-2; 1-10-2010; 1-100926-860Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2010.09.027info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0926860X10006812info:eu-repo/semantics/altIdentifier/issn/0926-860Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:37:29Zoai:ri.conicet.gov.ar:11336/4718instacron: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:34982025-10-15 14:37:29.401CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
title Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
spellingShingle Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
Schmal, Martin
Mixed Oxides
Ironzirconia
Iron Catalyst
Mössbauer
Selox Reaction
title_short Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
title_full Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
title_fullStr Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
title_full_unstemmed Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
title_sort Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation
dc.creator.none.fl_str_mv Schmal, Martin
Scheunemann, Ricardo
Ribeiro, Nielson F.P.
Bengoa, Jose Fernando
Marchetti, Sergio Gustavo
author Schmal, Martin
author_facet Schmal, Martin
Scheunemann, Ricardo
Ribeiro, Nielson F.P.
Bengoa, Jose Fernando
Marchetti, Sergio Gustavo
author_role author
author2 Scheunemann, Ricardo
Ribeiro, Nielson F.P.
Bengoa, Jose Fernando
Marchetti, Sergio Gustavo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Mixed Oxides
Ironzirconia
Iron Catalyst
Mössbauer
Selox Reaction
topic Mixed Oxides
Ironzirconia
Iron Catalyst
Mössbauer
Selox Reaction
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Catalysts of Pt on Fe2O3 and mixed oxides FexZr(1−x)O2 were prepared for the selective CO + H2 oxidation. X-ray diffraction and Mössbauer spectroscopy showed -Fe2O3 in pure support, a solid solution for x = 0.25 and mixed oxides with segregated phases for higher “x” values. Mössbauer results showed also that with increasing the Zr content Zr4+ ions substitute the Fe3+ ions in the -Fe2O3 lattice, and also Fe3+ ions diffusing into the zirconia lattice. The Pt/Fe0.25Zr0.75O2(p) exhibited only Fe3+ inside the ZrO2 lattice. After reduction, Fe3O4 was found in the catalysts, which decreased with increasing zirconium loading. It is interesting to note that the corresponding precursor presents 83% of Fe3+ located in the ZrO2 lattice and the remaining 17% corresponds to hematite. Catalytic tests for the preferential oxidation of CO containing H2 showed maximum CO conversion at different temperatures after reaching total oxygen conversion. The CO conversion decreased with increasing iron content in the mixed oxide. The Pt/Fe2O3 catalyst is the most active compared to the other Pt/mixed oxide and Pt/ZrO2. Results showed the following order: Pt/Fe2O3(c) > Pt/Fe0.75Zr0.25O2(c) > Pt/Fe0.25Zr0.75O2(c) > Pt/ZrO2. The Pt/Fe0.25Zr0.75O2(c) presented high selectivity (56%) at 90 ◦C and is 2-fold higher compared to the Pt/Fe2O3 and Pt/ZrO2 catalyst.
Fil: Schmal, Martin. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; Brasil
Fil: Scheunemann, Ricardo. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; Brasil
Fil: Ribeiro, Nielson F.P.. Centro de Tecnologia, COPPE/UFRJ, NUCAT Nucleo de Catalise; Brasil
Fil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
description Catalysts of Pt on Fe2O3 and mixed oxides FexZr(1−x)O2 were prepared for the selective CO + H2 oxidation. X-ray diffraction and Mössbauer spectroscopy showed -Fe2O3 in pure support, a solid solution for x = 0.25 and mixed oxides with segregated phases for higher “x” values. Mössbauer results showed also that with increasing the Zr content Zr4+ ions substitute the Fe3+ ions in the -Fe2O3 lattice, and also Fe3+ ions diffusing into the zirconia lattice. The Pt/Fe0.25Zr0.75O2(p) exhibited only Fe3+ inside the ZrO2 lattice. After reduction, Fe3O4 was found in the catalysts, which decreased with increasing zirconium loading. It is interesting to note that the corresponding precursor presents 83% of Fe3+ located in the ZrO2 lattice and the remaining 17% corresponds to hematite. Catalytic tests for the preferential oxidation of CO containing H2 showed maximum CO conversion at different temperatures after reaching total oxygen conversion. The CO conversion decreased with increasing iron content in the mixed oxide. The Pt/Fe2O3 catalyst is the most active compared to the other Pt/mixed oxide and Pt/ZrO2. Results showed the following order: Pt/Fe2O3(c) > Pt/Fe0.75Zr0.25O2(c) > Pt/Fe0.25Zr0.75O2(c) > Pt/ZrO2. The Pt/Fe0.25Zr0.75O2(c) presented high selectivity (56%) at 90 ◦C and is 2-fold higher compared to the Pt/Fe2O3 and Pt/ZrO2 catalyst.
publishDate 2010
dc.date.none.fl_str_mv 2010-10-01
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/11336/4718
Schmal, Martin; Scheunemann, Ricardo; Ribeiro, Nielson F.P.; Bengoa, Jose Fernando; Marchetti, Sergio Gustavo; Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation; Elsevier Science; Applied Catalysis A: General; 392; 1-2; 1-10-2010; 1-10
0926-860X
url http://hdl.handle.net/11336/4718
identifier_str_mv Schmal, Martin; Scheunemann, Ricardo; Ribeiro, Nielson F.P.; Bengoa, Jose Fernando; Marchetti, Sergio Gustavo; Synthesis and characterization of Pt/Fe?Zr catalysts for the CO selective oxidation; Elsevier Science; Applied Catalysis A: General; 392; 1-2; 1-10-2010; 1-10
0926-860X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2010.09.027
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0926860X10006812
info:eu-repo/semantics/altIdentifier/issn/0926-860X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv 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 13.22299

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