Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides

Autores
Zimicz, Maria Genoveva; Larrondo, Susana Adelina; Prado, R.J.; Lamas, Diego Germán
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The aim of this paper is to gain further insight in the reduction and reoxidation processes taking place when Ce0.9Zr0.1O2 mixed oxides are in reducing or oxidizing atmospheres, respectively. The reduction process of these mixed oxides synthesized by two stoichiometric nitrate-aminoacid gel-combustion routes using glycine and lysine as fuels is studied by conventional H2-Temperature Programmed Reduction experiments. The results are compared with those obtained by time-resolved in situ X-ray absorption near-edge spectroscopy (XANES) in the energy level corresponding to the Ce LIII absorption edge. The reoxidation process by this last technique is also studied. Even though the identical composition and crystal structure of both samples, the redox processes resulted very different for each solid, suggesting the influence of specific surface area, pore volume and particle size on them.
Fil: Zimicz, Maria Genoveva. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina
Fil: Larrondo, Susana Adelina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Fil: Prado, R.J.. Universidade Federal do Mato Grosso do Sul; Brasil
Fil: Lamas, Diego Germán. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Materia
XANES
TPR
REDUCTION-REOXIDATION
Ce0.9Zr0.1O2
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:11336/102978
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/102978
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxidesZimicz, Maria GenovevaLarrondo, Susana AdelinaPrado, R.J.Lamas, Diego GermánXANESTPRREDUCTION-REOXIDATIONCe0.9Zr0.1O2https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The aim of this paper is to gain further insight in the reduction and reoxidation processes taking place when Ce0.9Zr0.1O2 mixed oxides are in reducing or oxidizing atmospheres, respectively. The reduction process of these mixed oxides synthesized by two stoichiometric nitrate-aminoacid gel-combustion routes using glycine and lysine as fuels is studied by conventional H2-Temperature Programmed Reduction experiments. The results are compared with those obtained by time-resolved in situ X-ray absorption near-edge spectroscopy (XANES) in the energy level corresponding to the Ce LIII absorption edge. The reoxidation process by this last technique is also studied. Even though the identical composition and crystal structure of both samples, the redox processes resulted very different for each solid, suggesting the influence of specific surface area, pore volume and particle size on them.Fil: Zimicz, Maria Genoveva. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; ArgentinaFil: Larrondo, Susana Adelina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; ArgentinaFil: Prado, R.J.. Universidade Federal do Mato Grosso do Sul; BrasilFil: Lamas, Diego Germán. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; ArgentinaPergamon-Elsevier Science Ltd2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/102978Zimicz, Maria Genoveva; Larrondo, Susana Adelina; Prado, R.J.; Lamas, Diego Germán; Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 37; 19; 10-2012; 14881-148860360-3199CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0360319912003072info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijhydene.2012.01.162info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:17:45Zoai:ri.conicet.gov.ar:11336/102978instacron: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 10:17:45.459CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
title Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
spellingShingle Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
Zimicz, Maria Genoveva
XANES
TPR
REDUCTION-REOXIDATION
Ce0.9Zr0.1O2
title_short Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
title_full Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
title_fullStr Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
title_full_unstemmed Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
title_sort Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides
dc.creator.none.fl_str_mv Zimicz, Maria Genoveva
Larrondo, Susana Adelina
Prado, R.J.
Lamas, Diego Germán
author Zimicz, Maria Genoveva
author_facet Zimicz, Maria Genoveva
Larrondo, Susana Adelina
Prado, R.J.
Lamas, Diego Germán
author_role author
author2 Larrondo, Susana Adelina
Prado, R.J.
Lamas, Diego Germán
author2_role author
author
author
dc.subject.none.fl_str_mv XANES
TPR
REDUCTION-REOXIDATION
Ce0.9Zr0.1O2
topic XANES
TPR
REDUCTION-REOXIDATION
Ce0.9Zr0.1O2
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The aim of this paper is to gain further insight in the reduction and reoxidation processes taking place when Ce0.9Zr0.1O2 mixed oxides are in reducing or oxidizing atmospheres, respectively. The reduction process of these mixed oxides synthesized by two stoichiometric nitrate-aminoacid gel-combustion routes using glycine and lysine as fuels is studied by conventional H2-Temperature Programmed Reduction experiments. The results are compared with those obtained by time-resolved in situ X-ray absorption near-edge spectroscopy (XANES) in the energy level corresponding to the Ce LIII absorption edge. The reoxidation process by this last technique is also studied. Even though the identical composition and crystal structure of both samples, the redox processes resulted very different for each solid, suggesting the influence of specific surface area, pore volume and particle size on them.
Fil: Zimicz, Maria Genoveva. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina
Fil: Larrondo, Susana Adelina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina. Ministerio de Defensa. Instituto de Investigaciones Científicas y Técnicas para la Defensa; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Fil: Prado, R.J.. Universidade Federal do Mato Grosso do Sul; Brasil
Fil: Lamas, Diego Germán. Universidad Nacional del Comahue. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
description The aim of this paper is to gain further insight in the reduction and reoxidation processes taking place when Ce0.9Zr0.1O2 mixed oxides are in reducing or oxidizing atmospheres, respectively. The reduction process of these mixed oxides synthesized by two stoichiometric nitrate-aminoacid gel-combustion routes using glycine and lysine as fuels is studied by conventional H2-Temperature Programmed Reduction experiments. The results are compared with those obtained by time-resolved in situ X-ray absorption near-edge spectroscopy (XANES) in the energy level corresponding to the Ce LIII absorption edge. The reoxidation process by this last technique is also studied. Even though the identical composition and crystal structure of both samples, the redox processes resulted very different for each solid, suggesting the influence of specific surface area, pore volume and particle size on them.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
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/11336/102978
Zimicz, Maria Genoveva; Larrondo, Susana Adelina; Prado, R.J.; Lamas, Diego Germán; Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 37; 19; 10-2012; 14881-14886
0360-3199
CONICET Digital
CONICET
url http://hdl.handle.net/11336/102978
identifier_str_mv Zimicz, Maria Genoveva; Larrondo, Susana Adelina; Prado, R.J.; Lamas, Diego Germán; Time-resolved in situ XANES study of the redox properties of Ce0.9Zr0.1O2 mixed oxides; Pergamon-Elsevier Science Ltd; International Journal of Hydrogen Energy; 37; 19; 10-2012; 14881-14886
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/url/http://www.sciencedirect.com/science/article/pii/S0360319912003072
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijhydene.2012.01.162
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
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
_version_ 1844614132726235136
score 13.070432

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