Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid

Autores
Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bonivardi, Adrian Lionel; Bañares, Miguel A.; Briand, Laura Estefania
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present, for the first time in literature, a systematic study of the molecular structure of the Wells-Dawson heteropolyacid H6P2W18O62.24H2O (HPA) dispersed on TiO2, SiO2, ZrO2 and Al2O3. The heteropolyacid-based materials were synthesized through a conventional impregnation method (in aqueous and ethanol media) at a loading that corresponds to the theoretical monolayer coverage (dispersion limit loading). The combination of Raman and infrared studies demonstrates the presence of crystals of HPA (regardless of the nature of the medium used during the synthesis) suggesting that the dispersion limit loading was greatly exceeded. In situ temperature programmed analyses demonstrated that the Raman shift of the distinctive W=O Raman mode of the fosfotungstic Wells-Dawson heteropolyacid is sensitive to the local environment, that is the amount of water molecules associated with the structure. Moreover, the aqueous based species associated with such structures are recognizable through infrared spectroscopy.
Fil: Matkovic, Silvana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; Argentina
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Bañares, Miguel A.. CSIC, Consejo Superior de Investigaciones Cientificas, Instituto de Catalisis y Petroquimica.Catalytic Spectroscopy Laboratory; España
Fil: Briand, Laura Estefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; Argentina
Materia
Heteropolyacid
Wells-Dawson
Phosphotungstic
Tp-Ir in Situ
Tp-Raman in Situ
Molecular Spectroscopy
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:11336/5531
Acceder
id CONICETDig_caa7d217bd8061672384d98bcb624716
oai_identifier_str oai:ri.conicet.gov.ar:11336/5531
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson HeteropolyacidMatkovic, Silvana RaquelCollins, Sebastián EnriqueBonivardi, Adrian LionelBañares, Miguel A.Briand, Laura EstefaniaHeteropolyacidWells-DawsonPhosphotungsticTp-Ir in SituTp-Raman in SituMolecular Spectroscopyhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We present, for the first time in literature, a systematic study of the molecular structure of the Wells-Dawson heteropolyacid H6P2W18O62.24H2O (HPA) dispersed on TiO2, SiO2, ZrO2 and Al2O3. The heteropolyacid-based materials were synthesized through a conventional impregnation method (in aqueous and ethanol media) at a loading that corresponds to the theoretical monolayer coverage (dispersion limit loading). The combination of Raman and infrared studies demonstrates the presence of crystals of HPA (regardless of the nature of the medium used during the synthesis) suggesting that the dispersion limit loading was greatly exceeded. In situ temperature programmed analyses demonstrated that the Raman shift of the distinctive W=O Raman mode of the fosfotungstic Wells-Dawson heteropolyacid is sensitive to the local environment, that is the amount of water molecules associated with the structure. Moreover, the aqueous based species associated with such structures are recognizable through infrared spectroscopy.Fil: Matkovic, Silvana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; ArgentinaFil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Bañares, Miguel A.. CSIC, Consejo Superior de Investigaciones Cientificas, Instituto de Catalisis y Petroquimica.Catalytic Spectroscopy Laboratory; EspañaFil: Briand, Laura Estefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; ArgentinaRoyal Society Of Chemistry2015-02-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5531Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bonivardi, Adrian Lionel; Bañares, Miguel A.; Briand, Laura Estefania; Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid; Royal Society Of Chemistry; Physical Chemistry Chemical Physics; 17; 12; 12-2-2015; 8097-81051463-9076enginfo:eu-repo/semantics/altIdentifier/ark/http://pubs.rsc.org/en/Content/ArticleLanding/2015/CP/c4cp04455jinfo:eu-repo/semantics/altIdentifier/doi/10.1039/C4CP04455Jinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:33:34Zoai:ri.conicet.gov.ar:11336/5531instacron: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:34982025-10-22 11:33:34.726CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
title Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
spellingShingle Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
Matkovic, Silvana Raquel
Heteropolyacid
Wells-Dawson
Phosphotungstic
Tp-Ir in Situ
Tp-Raman in Situ
Molecular Spectroscopy
title_short Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
title_full Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
title_fullStr Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
title_full_unstemmed Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
title_sort Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid
dc.creator.none.fl_str_mv Matkovic, Silvana Raquel
Collins, Sebastián Enrique
Bonivardi, Adrian Lionel
Bañares, Miguel A.
Briand, Laura Estefania
author Matkovic, Silvana Raquel
author_facet Matkovic, Silvana Raquel
Collins, Sebastián Enrique
Bonivardi, Adrian Lionel
Bañares, Miguel A.
Briand, Laura Estefania
author_role author
author2 Collins, Sebastián Enrique
Bonivardi, Adrian Lionel
Bañares, Miguel A.
Briand, Laura Estefania
author2_role author
author
author
author
dc.subject.none.fl_str_mv Heteropolyacid
Wells-Dawson
Phosphotungstic
Tp-Ir in Situ
Tp-Raman in Situ
Molecular Spectroscopy
topic Heteropolyacid
Wells-Dawson
Phosphotungstic
Tp-Ir in Situ
Tp-Raman in Situ
Molecular Spectroscopy
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present, for the first time in literature, a systematic study of the molecular structure of the Wells-Dawson heteropolyacid H6P2W18O62.24H2O (HPA) dispersed on TiO2, SiO2, ZrO2 and Al2O3. The heteropolyacid-based materials were synthesized through a conventional impregnation method (in aqueous and ethanol media) at a loading that corresponds to the theoretical monolayer coverage (dispersion limit loading). The combination of Raman and infrared studies demonstrates the presence of crystals of HPA (regardless of the nature of the medium used during the synthesis) suggesting that the dispersion limit loading was greatly exceeded. In situ temperature programmed analyses demonstrated that the Raman shift of the distinctive W=O Raman mode of the fosfotungstic Wells-Dawson heteropolyacid is sensitive to the local environment, that is the amount of water molecules associated with the structure. Moreover, the aqueous based species associated with such structures are recognizable through infrared spectroscopy.
Fil: Matkovic, Silvana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; Argentina
Fil: Collins, Sebastián Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Bañares, Miguel A.. CSIC, Consejo Superior de Investigaciones Cientificas, Instituto de Catalisis y Petroquimica.Catalytic Spectroscopy Laboratory; España
Fil: Briand, Laura Estefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Ciencias Aplicadas; Argentina
description We present, for the first time in literature, a systematic study of the molecular structure of the Wells-Dawson heteropolyacid H6P2W18O62.24H2O (HPA) dispersed on TiO2, SiO2, ZrO2 and Al2O3. The heteropolyacid-based materials were synthesized through a conventional impregnation method (in aqueous and ethanol media) at a loading that corresponds to the theoretical monolayer coverage (dispersion limit loading). The combination of Raman and infrared studies demonstrates the presence of crystals of HPA (regardless of the nature of the medium used during the synthesis) suggesting that the dispersion limit loading was greatly exceeded. In situ temperature programmed analyses demonstrated that the Raman shift of the distinctive W=O Raman mode of the fosfotungstic Wells-Dawson heteropolyacid is sensitive to the local environment, that is the amount of water molecules associated with the structure. Moreover, the aqueous based species associated with such structures are recognizable through infrared spectroscopy.
publishDate 2015
dc.date.none.fl_str_mv 2015-02-12
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/11336/5531
Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bonivardi, Adrian Lionel; Bañares, Miguel A.; Briand, Laura Estefania; Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid; Royal Society Of Chemistry; Physical Chemistry Chemical Physics; 17; 12; 12-2-2015; 8097-8105
1463-9076
url http://hdl.handle.net/11336/5531
identifier_str_mv Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bonivardi, Adrian Lionel; Bañares, Miguel A.; Briand, Laura Estefania; Molecular Structure and Thermal Stability of Oxide-Supported Phosphotungstic Wells-Dawson Heteropolyacid; Royal Society Of Chemistry; Physical Chemistry Chemical Physics; 17; 12; 12-2-2015; 8097-8105
1463-9076
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/ark/http://pubs.rsc.org/en/Content/ArticleLanding/2015/CP/c4cp04455j
info:eu-repo/semantics/altIdentifier/doi/10.1039/C4CP04455J
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society Of Chemistry
publisher.none.fl_str_mv Royal Society Of Chemistry
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 12.982451

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