Effect of titanium-doping on the properties of vanadium antimonate catalysts

Autores
Barbaro, Andrés; Larrondo, Susana Adelina; Duhalde, Stella Maris; Amadeo, Norma Elvira
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Catalysts of nominal compositions VSb1 - xTixO4, with x = 0, 0.1, 0.2 and 0.4, were prepared by solid state reaction of vanadium(V) oxide, antimony(III) oxide and titanium(IV) oxide mixtures. Their structural and catalytic properties were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (TPR) and catalytic heterogeneous oxidation of toluene to benzaldehyde. The samples with 10% (x = 0.1) and 20% (x = 0.2) of titanium present the highest activity and selectivity to benzaldehyde under the operating conditions used in this work. When the titanium content is 40% (x = 0.4), the activity level drops strongly below the level found for the undoped vanadium antimonate. X-ray patterns show the presence of vanadium(V) oxide as a separate phase in this sample, and this is probably the cause of the low catalytic performance. TPR results show that the replacement of antimony by titanium changes the oxidation-reduction properties of the vanadium antimonate phase. In the samples with titanium content up to 20%, there seems to be a direct relationship between the selectivity and the separation of the reduction temperatures of both reduction peaks of the TPR profile: the larger the separation, the higher is the selectivity to benzaldehyde. All the samples with x = 0, 0.1 and 0.2 show surface antimony excess despite being prepared from stoichiometric mixtures of nominal V/Sb ratios larger than or equal to 1. © 2000 Elsevier Science B.V. All rights reserved.
Fil: Barbaro, Andrés. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina
Fil: Larrondo, Susana Adelina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina
Fil: Duhalde, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina
Fil: Amadeo, Norma Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina
Materia
Antimony
Benzaldehyde
Titanium
Toluene Oxidation
Vanadium
Vanadium Antimonate
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:11336/71705
Acceder
id CONICETDig_0bac151a694cf13aeb3234d86ba11649
oai_identifier_str oai:ri.conicet.gov.ar:11336/71705
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of titanium-doping on the properties of vanadium antimonate catalystsBarbaro, AndrésLarrondo, Susana AdelinaDuhalde, Stella MarisAmadeo, Norma ElviraAntimonyBenzaldehydeTitaniumToluene OxidationVanadiumVanadium Antimonatehttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Catalysts of nominal compositions VSb1 - xTixO4, with x = 0, 0.1, 0.2 and 0.4, were prepared by solid state reaction of vanadium(V) oxide, antimony(III) oxide and titanium(IV) oxide mixtures. Their structural and catalytic properties were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (TPR) and catalytic heterogeneous oxidation of toluene to benzaldehyde. The samples with 10% (x = 0.1) and 20% (x = 0.2) of titanium present the highest activity and selectivity to benzaldehyde under the operating conditions used in this work. When the titanium content is 40% (x = 0.4), the activity level drops strongly below the level found for the undoped vanadium antimonate. X-ray patterns show the presence of vanadium(V) oxide as a separate phase in this sample, and this is probably the cause of the low catalytic performance. TPR results show that the replacement of antimony by titanium changes the oxidation-reduction properties of the vanadium antimonate phase. In the samples with titanium content up to 20%, there seems to be a direct relationship between the selectivity and the separation of the reduction temperatures of both reduction peaks of the TPR profile: the larger the separation, the higher is the selectivity to benzaldehyde. All the samples with x = 0, 0.1 and 0.2 show surface antimony excess despite being prepared from stoichiometric mixtures of nominal V/Sb ratios larger than or equal to 1. © 2000 Elsevier Science B.V. All rights reserved.Fil: Barbaro, Andrés. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; ArgentinaFil: Larrondo, Susana Adelina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; ArgentinaFil: Duhalde, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; ArgentinaFil: Amadeo, Norma Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; ArgentinaElsevier Science2000-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71705Barbaro, Andrés; Larrondo, Susana Adelina; Duhalde, Stella Maris; Amadeo, Norma Elvira; Effect of titanium-doping on the properties of vanadium antimonate catalysts; Elsevier Science; Applied Catalysis A: General; 193; 1-2; 2-2000; 277-2830926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0926-860X(99)00445-7info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X99004457info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:45:09Zoai:ri.conicet.gov.ar:11336/71705instacron: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:34982025-11-05 09:45:09.999CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of titanium-doping on the properties of vanadium antimonate catalysts
title Effect of titanium-doping on the properties of vanadium antimonate catalysts
spellingShingle Effect of titanium-doping on the properties of vanadium antimonate catalysts
Barbaro, Andrés
Antimony
Benzaldehyde
Titanium
Toluene Oxidation
Vanadium
Vanadium Antimonate
title_short Effect of titanium-doping on the properties of vanadium antimonate catalysts
title_full Effect of titanium-doping on the properties of vanadium antimonate catalysts
title_fullStr Effect of titanium-doping on the properties of vanadium antimonate catalysts
title_full_unstemmed Effect of titanium-doping on the properties of vanadium antimonate catalysts
title_sort Effect of titanium-doping on the properties of vanadium antimonate catalysts
dc.creator.none.fl_str_mv Barbaro, Andrés
Larrondo, Susana Adelina
Duhalde, Stella Maris
Amadeo, Norma Elvira
author Barbaro, Andrés
author_facet Barbaro, Andrés
Larrondo, Susana Adelina
Duhalde, Stella Maris
Amadeo, Norma Elvira
author_role author
author2 Larrondo, Susana Adelina
Duhalde, Stella Maris
Amadeo, Norma Elvira
author2_role author
author
author
dc.subject.none.fl_str_mv Antimony
Benzaldehyde
Titanium
Toluene Oxidation
Vanadium
Vanadium Antimonate
topic Antimony
Benzaldehyde
Titanium
Toluene Oxidation
Vanadium
Vanadium Antimonate
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 nominal compositions VSb1 - xTixO4, with x = 0, 0.1, 0.2 and 0.4, were prepared by solid state reaction of vanadium(V) oxide, antimony(III) oxide and titanium(IV) oxide mixtures. Their structural and catalytic properties were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (TPR) and catalytic heterogeneous oxidation of toluene to benzaldehyde. The samples with 10% (x = 0.1) and 20% (x = 0.2) of titanium present the highest activity and selectivity to benzaldehyde under the operating conditions used in this work. When the titanium content is 40% (x = 0.4), the activity level drops strongly below the level found for the undoped vanadium antimonate. X-ray patterns show the presence of vanadium(V) oxide as a separate phase in this sample, and this is probably the cause of the low catalytic performance. TPR results show that the replacement of antimony by titanium changes the oxidation-reduction properties of the vanadium antimonate phase. In the samples with titanium content up to 20%, there seems to be a direct relationship between the selectivity and the separation of the reduction temperatures of both reduction peaks of the TPR profile: the larger the separation, the higher is the selectivity to benzaldehyde. All the samples with x = 0, 0.1 and 0.2 show surface antimony excess despite being prepared from stoichiometric mixtures of nominal V/Sb ratios larger than or equal to 1. © 2000 Elsevier Science B.V. All rights reserved.
Fil: Barbaro, Andrés. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina
Fil: Larrondo, Susana Adelina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina
Fil: Duhalde, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física; Argentina
Fil: Amadeo, Norma Elvira. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Ingeniería Química. Laboratorio de Procesos Catalíticos; Argentina
description Catalysts of nominal compositions VSb1 - xTixO4, with x = 0, 0.1, 0.2 and 0.4, were prepared by solid state reaction of vanadium(V) oxide, antimony(III) oxide and titanium(IV) oxide mixtures. Their structural and catalytic properties were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (TPR) and catalytic heterogeneous oxidation of toluene to benzaldehyde. The samples with 10% (x = 0.1) and 20% (x = 0.2) of titanium present the highest activity and selectivity to benzaldehyde under the operating conditions used in this work. When the titanium content is 40% (x = 0.4), the activity level drops strongly below the level found for the undoped vanadium antimonate. X-ray patterns show the presence of vanadium(V) oxide as a separate phase in this sample, and this is probably the cause of the low catalytic performance. TPR results show that the replacement of antimony by titanium changes the oxidation-reduction properties of the vanadium antimonate phase. In the samples with titanium content up to 20%, there seems to be a direct relationship between the selectivity and the separation of the reduction temperatures of both reduction peaks of the TPR profile: the larger the separation, the higher is the selectivity to benzaldehyde. All the samples with x = 0, 0.1 and 0.2 show surface antimony excess despite being prepared from stoichiometric mixtures of nominal V/Sb ratios larger than or equal to 1. © 2000 Elsevier Science B.V. All rights reserved.
publishDate 2000
dc.date.none.fl_str_mv 2000-02
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/11336/71705
Barbaro, Andrés; Larrondo, Susana Adelina; Duhalde, Stella Maris; Amadeo, Norma Elvira; Effect of titanium-doping on the properties of vanadium antimonate catalysts; Elsevier Science; Applied Catalysis A: General; 193; 1-2; 2-2000; 277-283
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71705
identifier_str_mv Barbaro, Andrés; Larrondo, Susana Adelina; Duhalde, Stella Maris; Amadeo, Norma Elvira; Effect of titanium-doping on the properties of vanadium antimonate catalysts; Elsevier Science; Applied Catalysis A: General; 193; 1-2; 2-2000; 277-283
0926-860X
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/S0926-860X(99)00445-7
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X99004457
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
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 13.084122

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