Propane oxidative dehydrogenation on VOx/ZrO2 catalysts

Autores
Pieck, Carlos Luis; Bañares, M.A.; Fierro, J.L.G.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The catalytic properties of the V2O5/ZrO2 system for the oxidative dehydrogenation of propane were studied. Catalysts with different chemical compositions (i.e., vanadium oxide loadings) were prepared, with activation done by calcination at two temperature levels. Samples were characterized by nitrogen adsorption, temperature-programmed reduction, and Raman and photoelectron spectroscopic techniques. It was found that calcination temperature level strongly affects the structure of ZrO2 (tetragonal zirconia predominates at 500 °C while the transformation to a monoclinic phase occurs at 650 °C). The calcination temperature also affects the nature of vanadium oxide species on the surface of ZrO2. After calcination at 500 °C surface vanadium oxide species are formed at low vanadium loadings, but crystalline V2O5 structures appear at the higher ones. Calcination at 650 °C leads to the formation of ZrV2O7, mainly at high vanadium loadings. The results of propane oxidative dehydrogenation show that surface-isolated vanadium oxide species are more selective to C3H6. On the other hand, it was found that the catalysts suffer a slow deactivation during reaction due to ZrV2O7 formation. This transformation decreases the activity but the activity-selectivity profile is not affected.
Fil: Pieck, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Bañares, M.A.. Consejo Superior de Investigaciones Científicas; España
Fil: Fierro, J.L.G.. Consejo Superior de Investigaciones Científicas; España
Materia
Oxidative Dehydrogenation
Propane
Vanadium-Supported Catalysts
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:11336/55834
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/55834
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Propane oxidative dehydrogenation on VOx/ZrO2 catalystsPieck, Carlos LuisBañares, M.A.Fierro, J.L.G.Oxidative DehydrogenationPropaneVanadium-Supported Catalystshttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2The catalytic properties of the V2O5/ZrO2 system for the oxidative dehydrogenation of propane were studied. Catalysts with different chemical compositions (i.e., vanadium oxide loadings) were prepared, with activation done by calcination at two temperature levels. Samples were characterized by nitrogen adsorption, temperature-programmed reduction, and Raman and photoelectron spectroscopic techniques. It was found that calcination temperature level strongly affects the structure of ZrO2 (tetragonal zirconia predominates at 500 °C while the transformation to a monoclinic phase occurs at 650 °C). The calcination temperature also affects the nature of vanadium oxide species on the surface of ZrO2. After calcination at 500 °C surface vanadium oxide species are formed at low vanadium loadings, but crystalline V2O5 structures appear at the higher ones. Calcination at 650 °C leads to the formation of ZrV2O7, mainly at high vanadium loadings. The results of propane oxidative dehydrogenation show that surface-isolated vanadium oxide species are more selective to C3H6. On the other hand, it was found that the catalysts suffer a slow deactivation during reaction due to ZrV2O7 formation. This transformation decreases the activity but the activity-selectivity profile is not affected.Fil: Pieck, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Bañares, M.A.. Consejo Superior de Investigaciones Científicas; EspañaFil: Fierro, J.L.G.. Consejo Superior de Investigaciones Científicas; EspañaElsevier Science Inc2004-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55834Pieck, Carlos Luis; Bañares, M.A.; Fierro, J.L.G.; Propane oxidative dehydrogenation on VOx/ZrO2 catalysts; Elsevier Science Inc; Journal of Catalysis; 224; 1; 5-2004; 1-70021-9517CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jcat.2004.02.024info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:07Zoai:ri.conicet.gov.ar:11336/55834instacron: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 10:41:07.399CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
title Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
spellingShingle Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
Pieck, Carlos Luis
Oxidative Dehydrogenation
Propane
Vanadium-Supported Catalysts
title_short Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
title_full Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
title_fullStr Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
title_full_unstemmed Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
title_sort Propane oxidative dehydrogenation on VOx/ZrO2 catalysts
dc.creator.none.fl_str_mv Pieck, Carlos Luis
Bañares, M.A.
Fierro, J.L.G.
author Pieck, Carlos Luis
author_facet Pieck, Carlos Luis
Bañares, M.A.
Fierro, J.L.G.
author_role author
author2 Bañares, M.A.
Fierro, J.L.G.
author2_role author
author
dc.subject.none.fl_str_mv Oxidative Dehydrogenation
Propane
Vanadium-Supported Catalysts
topic Oxidative Dehydrogenation
Propane
Vanadium-Supported Catalysts
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.7
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The catalytic properties of the V2O5/ZrO2 system for the oxidative dehydrogenation of propane were studied. Catalysts with different chemical compositions (i.e., vanadium oxide loadings) were prepared, with activation done by calcination at two temperature levels. Samples were characterized by nitrogen adsorption, temperature-programmed reduction, and Raman and photoelectron spectroscopic techniques. It was found that calcination temperature level strongly affects the structure of ZrO2 (tetragonal zirconia predominates at 500 °C while the transformation to a monoclinic phase occurs at 650 °C). The calcination temperature also affects the nature of vanadium oxide species on the surface of ZrO2. After calcination at 500 °C surface vanadium oxide species are formed at low vanadium loadings, but crystalline V2O5 structures appear at the higher ones. Calcination at 650 °C leads to the formation of ZrV2O7, mainly at high vanadium loadings. The results of propane oxidative dehydrogenation show that surface-isolated vanadium oxide species are more selective to C3H6. On the other hand, it was found that the catalysts suffer a slow deactivation during reaction due to ZrV2O7 formation. This transformation decreases the activity but the activity-selectivity profile is not affected.
Fil: Pieck, Carlos Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Bañares, M.A.. Consejo Superior de Investigaciones Científicas; España
Fil: Fierro, J.L.G.. Consejo Superior de Investigaciones Científicas; España
description The catalytic properties of the V2O5/ZrO2 system for the oxidative dehydrogenation of propane were studied. Catalysts with different chemical compositions (i.e., vanadium oxide loadings) were prepared, with activation done by calcination at two temperature levels. Samples were characterized by nitrogen adsorption, temperature-programmed reduction, and Raman and photoelectron spectroscopic techniques. It was found that calcination temperature level strongly affects the structure of ZrO2 (tetragonal zirconia predominates at 500 °C while the transformation to a monoclinic phase occurs at 650 °C). The calcination temperature also affects the nature of vanadium oxide species on the surface of ZrO2. After calcination at 500 °C surface vanadium oxide species are formed at low vanadium loadings, but crystalline V2O5 structures appear at the higher ones. Calcination at 650 °C leads to the formation of ZrV2O7, mainly at high vanadium loadings. The results of propane oxidative dehydrogenation show that surface-isolated vanadium oxide species are more selective to C3H6. On the other hand, it was found that the catalysts suffer a slow deactivation during reaction due to ZrV2O7 formation. This transformation decreases the activity but the activity-selectivity profile is not affected.
publishDate 2004
dc.date.none.fl_str_mv 2004-05
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/11336/55834
Pieck, Carlos Luis; Bañares, M.A.; Fierro, J.L.G.; Propane oxidative dehydrogenation on VOx/ZrO2 catalysts; Elsevier Science Inc; Journal of Catalysis; 224; 1; 5-2004; 1-7
0021-9517
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55834
identifier_str_mv Pieck, Carlos Luis; Bañares, M.A.; Fierro, J.L.G.; Propane oxidative dehydrogenation on VOx/ZrO2 catalysts; Elsevier Science Inc; Journal of Catalysis; 224; 1; 5-2004; 1-7
0021-9517
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.jcat.2004.02.024
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 Science Inc
publisher.none.fl_str_mv Elsevier Science Inc
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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