Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study

Highly reducible and redox active mixed oxides are employed in selective oxidation reactions and fuel cells, among others. Ceria is a renowned material in these applications because of its capacity to take and release oxygen. At the same time, these properties may be enhanced by cerium substitution...

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Detalhes bibliográficos
Autores: Iglesias, Ignacio Daniel, Baronetti, Graciela Teresita, Mariño, Fernando Javier
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/60271
Acesso em linha:http://hdl.handle.net/11336/60271
Access Level:acceso abierto
Palavra-chave:Doped Ceria
Osc-Oscc
Raman
Vacancies
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
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spelling Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility studyIglesias, Ignacio DanielBaronetti, Graciela TeresitaMariño, Fernando JavierDoped CeriaOsc-OsccRamanVacancieshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Highly reducible and redox active mixed oxides are employed in selective oxidation reactions and fuel cells, among others. Ceria is a renowned material in these applications because of its capacity to take and release oxygen. At the same time, these properties may be enhanced by cerium substitution with certain elements, usually, other rare earths. In this line, the present work is focused on the preparation of pure cerium oxide and doped with 5 %at of La, Pr or Zr. The solids were calcined at 600, 750 and 900 °C and characterized by diverse techniques (DRX, BET, Raman, OSC-OSCC, H2-TPR). When increasing calcination temperature, it was observed an improved specific surface and crystallite diameter conservation for La and Zr-doped samples. Oxygen vacancy generated by doping, observed both by Raman and OSC-OSCC, decreased with higher calcination temperatures for every solid. Ce0.95Pr0.05O2 − δ showed a maximum oxygen storage capacity for 750 °C calcination temperature consistent with Raman spectroscopy and hydrogen reduction profiles.Fil: Iglesias, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Tecnologías del Hidrogeno y Energias Sostenibles. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías del Hidrogeno y Energias Sostenibles; ArgentinaFil: Baronetti, Graciela Teresita. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Tecnologías del Hidrogeno y Energias Sostenibles. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías del Hidrogeno y Energias Sostenibles; ArgentinaFil: Mariño, Fernando Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Tecnologías del Hidrogeno y Energias Sostenibles. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías del Hidrogeno y Energias Sostenibles; ArgentinaElsevier Science2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60271Iglesias, Ignacio Daniel; Baronetti, Graciela Teresita; Mariño, Fernando Javier; Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study; Elsevier Science; Solid State Ionics; 309; 10-2017; 123-1290167-2738CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ssi.2017.07.008info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167273817303247info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:34:25Zoai:ri.conicet.gov.ar:11336/60271instacron: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:34982024-05-08 13:34:26.084CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
title Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
spellingShingle Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
Iglesias, Ignacio Daniel
Doped Ceria
Osc-Oscc
Raman
Vacancies
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
title_short Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
title_full Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
title_fullStr Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
title_full_unstemmed Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
title_sort Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study
dc.creator.none.fl_str_mv Iglesias, Ignacio Daniel
Baronetti, Graciela Teresita
Mariño, Fernando Javier
author Iglesias, Ignacio Daniel
author_facet Iglesias, Ignacio Daniel
Baronetti, Graciela Teresita
Mariño, Fernando Javier
author_role author
author2 Baronetti, Graciela Teresita
Mariño, Fernando Javier
author2_role author
author
dc.subject.none.fl_str_mv Doped Ceria
Osc-Oscc
Raman
Vacancies
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
topic Doped Ceria
Osc-Oscc
Raman
Vacancies
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
description Highly reducible and redox active mixed oxides are employed in selective oxidation reactions and fuel cells, among others. Ceria is a renowned material in these applications because of its capacity to take and release oxygen. At the same time, these properties may be enhanced by cerium substitution with certain elements, usually, other rare earths. In this line, the present work is focused on the preparation of pure cerium oxide and doped with 5 %at of La, Pr or Zr. The solids were calcined at 600, 750 and 900 °C and characterized by diverse techniques (DRX, BET, Raman, OSC-OSCC, H2-TPR). When increasing calcination temperature, it was observed an improved specific surface and crystallite diameter conservation for La and Zr-doped samples. Oxygen vacancy generated by doping, observed both by Raman and OSC-OSCC, decreased with higher calcination temperatures for every solid. Ce0.95Pr0.05O2 − δ showed a maximum oxygen storage capacity for 750 °C calcination temperature consistent with Raman spectroscopy and hydrogen reduction profiles.
publishDate 2017
dc.date.none.fl_str_mv 2017-10
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/11336/60271
Iglesias, Ignacio Daniel; Baronetti, Graciela Teresita; Mariño, Fernando Javier; Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study; Elsevier Science; Solid State Ionics; 309; 10-2017; 123-129
0167-2738
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60271
identifier_str_mv Iglesias, Ignacio Daniel; Baronetti, Graciela Teresita; Mariño, Fernando Javier; Ceria and Ce0.95M0.05O2 − δ mixed oxides (M = La, Pr, Zr): Vacancies and reducibility study; Elsevier Science; Solid State Ionics; 309; 10-2017; 123-129
0167-2738
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.ssi.2017.07.008
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0167273817303247
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,812429

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