Structure and properties of Cr promoted VPO catalysts

Autores
Pierini, Beatriz T.; Lombardo, Eduardo Agustin
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, VOHPO4·1/2H2O was synthesized from V2O5 and anhydrous H3PO4 in an alcohol mixture. The Cr(NO3)3 in varying proportions was either added during synthesis or impregnated on the dried vanadyl hydrogen phosphate. The solid features and the catalytic behavior of these formulations were affected by both the addition procedure and the Cr load. The effect of Cr upon the catalyst structure and the development of acid and redox sites were studied through XRD, TPR, LRS and FT-IR. Acetonitrile was used as a probe molecule to ascertain the Lewis acid strength of the surface sites present in all the VPO formulations. It is concluded that the impregnation of Cr is more effective to increase the concentration of very strong Lewis acid sites, while this method and co-precipitation are similarly effective in the generation of V5+/V4+ redox couples. Both types of sites in adequate balance are needed to optimize the catalytic behavior of VPO formulations.
Fil: Pierini, Beatriz T.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Materia
Acidity
Cr Promoter
Maleic Anhydride
Selective Oxidation
Vpo 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:11336/73017
Acceder
id CONICETDig_87c2ae371270bd52ba49f4c15aef92d6
oai_identifier_str oai:ri.conicet.gov.ar:11336/73017
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Structure and properties of Cr promoted VPO catalystsPierini, Beatriz T.Lombardo, Eduardo AgustinAcidityCr PromoterMaleic AnhydrideSelective OxidationVpo Catalystshttps://purl.org/becyt/ford/2.7https://purl.org/becyt/ford/2In this work, VOHPO4·1/2H2O was synthesized from V2O5 and anhydrous H3PO4 in an alcohol mixture. The Cr(NO3)3 in varying proportions was either added during synthesis or impregnated on the dried vanadyl hydrogen phosphate. The solid features and the catalytic behavior of these formulations were affected by both the addition procedure and the Cr load. The effect of Cr upon the catalyst structure and the development of acid and redox sites were studied through XRD, TPR, LRS and FT-IR. Acetonitrile was used as a probe molecule to ascertain the Lewis acid strength of the surface sites present in all the VPO formulations. It is concluded that the impregnation of Cr is more effective to increase the concentration of very strong Lewis acid sites, while this method and co-precipitation are similarly effective in the generation of V5+/V4+ redox couples. Both types of sites in adequate balance are needed to optimize the catalytic behavior of VPO formulations.Fil: Pierini, Beatriz T.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaElsevier Science Sa2005-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/73017Pierini, Beatriz T.; Lombardo, Eduardo Agustin; Structure and properties of Cr promoted VPO catalysts; Elsevier Science Sa; Materials Chemistry and Physics; 92; 1; 7-2005; 197-2040254-0584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchemphys.2005.01.009info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:47:26Zoai:ri.conicet.gov.ar:11336/73017instacron: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 14:47:26.372CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Structure and properties of Cr promoted VPO catalysts
title Structure and properties of Cr promoted VPO catalysts
spellingShingle Structure and properties of Cr promoted VPO catalysts
Pierini, Beatriz T.
Acidity
Cr Promoter
Maleic Anhydride
Selective Oxidation
Vpo Catalysts
title_short Structure and properties of Cr promoted VPO catalysts
title_full Structure and properties of Cr promoted VPO catalysts
title_fullStr Structure and properties of Cr promoted VPO catalysts
title_full_unstemmed Structure and properties of Cr promoted VPO catalysts
title_sort Structure and properties of Cr promoted VPO catalysts
dc.creator.none.fl_str_mv Pierini, Beatriz T.
Lombardo, Eduardo Agustin
author Pierini, Beatriz T.
author_facet Pierini, Beatriz T.
Lombardo, Eduardo Agustin
author_role author
author2 Lombardo, Eduardo Agustin
author2_role author
dc.subject.none.fl_str_mv Acidity
Cr Promoter
Maleic Anhydride
Selective Oxidation
Vpo Catalysts
topic Acidity
Cr Promoter
Maleic Anhydride
Selective Oxidation
Vpo 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 In this work, VOHPO4·1/2H2O was synthesized from V2O5 and anhydrous H3PO4 in an alcohol mixture. The Cr(NO3)3 in varying proportions was either added during synthesis or impregnated on the dried vanadyl hydrogen phosphate. The solid features and the catalytic behavior of these formulations were affected by both the addition procedure and the Cr load. The effect of Cr upon the catalyst structure and the development of acid and redox sites were studied through XRD, TPR, LRS and FT-IR. Acetonitrile was used as a probe molecule to ascertain the Lewis acid strength of the surface sites present in all the VPO formulations. It is concluded that the impregnation of Cr is more effective to increase the concentration of very strong Lewis acid sites, while this method and co-precipitation are similarly effective in the generation of V5+/V4+ redox couples. Both types of sites in adequate balance are needed to optimize the catalytic behavior of VPO formulations.
Fil: Pierini, Beatriz T.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
Fil: Lombardo, Eduardo Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
description In this work, VOHPO4·1/2H2O was synthesized from V2O5 and anhydrous H3PO4 in an alcohol mixture. The Cr(NO3)3 in varying proportions was either added during synthesis or impregnated on the dried vanadyl hydrogen phosphate. The solid features and the catalytic behavior of these formulations were affected by both the addition procedure and the Cr load. The effect of Cr upon the catalyst structure and the development of acid and redox sites were studied through XRD, TPR, LRS and FT-IR. Acetonitrile was used as a probe molecule to ascertain the Lewis acid strength of the surface sites present in all the VPO formulations. It is concluded that the impregnation of Cr is more effective to increase the concentration of very strong Lewis acid sites, while this method and co-precipitation are similarly effective in the generation of V5+/V4+ redox couples. Both types of sites in adequate balance are needed to optimize the catalytic behavior of VPO formulations.
publishDate 2005
dc.date.none.fl_str_mv 2005-07
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/11336/73017
Pierini, Beatriz T.; Lombardo, Eduardo Agustin; Structure and properties of Cr promoted VPO catalysts; Elsevier Science Sa; Materials Chemistry and Physics; 92; 1; 7-2005; 197-204
0254-0584
CONICET Digital
CONICET
url http://hdl.handle.net/11336/73017
identifier_str_mv Pierini, Beatriz T.; Lombardo, Eduardo Agustin; Structure and properties of Cr promoted VPO catalysts; Elsevier Science Sa; Materials Chemistry and Physics; 92; 1; 7-2005; 197-204
0254-0584
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.matchemphys.2005.01.009
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 Sa
publisher.none.fl_str_mv Elsevier Science Sa
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_ 1846082990241742848
score 13.22299

Publicaciones similares