Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy

Autores
Matkovic, Silvana Raquel; Briand, Laura Estefania; Bañares, Miguel Ángel
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The present investigation applies laser Raman spectroscopy under in situ conditions to obtain insights on the effect of the temperature on the molecular structure of the bulk phosphotungstic Wells-Dawson heteropoly-acid H6P2W18O62xH2O (HPA). The in situ temperature-programmed studies followed the evolution of phosphotungstic Wells-Dawson and Keggin heteropoly-acids along with tungsten trioxide under controlled atmosphere and temperature. The spectroscopic investigation of the Wells-Dawson HPA demonstrated that in situ Raman spectroscopy is a suitable technique to follow the effect of a gradual dehydration on the secondary structure of such a complex structure. Moreover, the absence of the signals belonging either to the Keggin or WO3 phases provides further evidence that the phosphotungstic heteropolyanion does not decomposes towards those materials at temperatures below 600 ºC.
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: Briand, Laura Estefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Bañares, Miguel Ángel . Instituto de Catálisis y Petroleoquímica. Laboratorio de Espectroscopia Catalítica; España
Materia
Inorganic Compounds
Oxides
Raman Spectroscopy
Crystal Structures
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/4779
Acceder
id CONICETDig_e61ccbc8fc52afe603df5ec319020736
oai_identifier_str oai:ri.conicet.gov.ar:11336/4779
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopyMatkovic, Silvana RaquelBriand, Laura EstefaniaBañares, Miguel Ángel Inorganic CompoundsOxidesRaman SpectroscopyCrystal Structureshttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The present investigation applies laser Raman spectroscopy under in situ conditions to obtain insights on the effect of the temperature on the molecular structure of the bulk phosphotungstic Wells-Dawson heteropoly-acid H6P2W18O62xH2O (HPA). The in situ temperature-programmed studies followed the evolution of phosphotungstic Wells-Dawson and Keggin heteropoly-acids along with tungsten trioxide under controlled atmosphere and temperature. The spectroscopic investigation of the Wells-Dawson HPA demonstrated that in situ Raman spectroscopy is a suitable technique to follow the effect of a gradual dehydration on the secondary structure of such a complex structure. Moreover, the absence of the signals belonging either to the Keggin or WO3 phases provides further evidence that the phosphotungstic heteropolyanion does not decomposes towards those materials at temperatures below 600 ºC.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: Briand, Laura Estefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Bañares, Miguel Ángel . Instituto de Catálisis y Petroleoquímica. Laboratorio de Espectroscopia Catalítica; EspañaElsevier2011-07-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4779Matkovic, Silvana Raquel; Briand, Laura Estefania; Bañares, Miguel Ángel ; Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy; Elsevier; Materials Research Bulletin; 46; 11; 20-7-2011; 1946-19480025-5408enginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0025540811003308info:eu-repo/semantics/altIdentifier/doi/10.1016/j.materresbull.2011.07.015info:eu-repo/semantics/altIdentifier/issn/0025-5408info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:11:27Zoai:ri.conicet.gov.ar:11336/4779instacron: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:34982025-09-17 11:11:27.44CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
title Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
spellingShingle Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
Matkovic, Silvana Raquel
Inorganic Compounds
Oxides
Raman Spectroscopy
Crystal Structures
title_short Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
title_full Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
title_fullStr Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
title_full_unstemmed Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
title_sort Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy
dc.creator.none.fl_str_mv Matkovic, Silvana Raquel
Briand, Laura Estefania
Bañares, Miguel Ángel
author Matkovic, Silvana Raquel
author_facet Matkovic, Silvana Raquel
Briand, Laura Estefania
Bañares, Miguel Ángel
author_role author
author2 Briand, Laura Estefania
Bañares, Miguel Ángel
author2_role author
author
dc.subject.none.fl_str_mv Inorganic Compounds
Oxides
Raman Spectroscopy
Crystal Structures
topic Inorganic Compounds
Oxides
Raman Spectroscopy
Crystal Structures
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The present investigation applies laser Raman spectroscopy under in situ conditions to obtain insights on the effect of the temperature on the molecular structure of the bulk phosphotungstic Wells-Dawson heteropoly-acid H6P2W18O62xH2O (HPA). The in situ temperature-programmed studies followed the evolution of phosphotungstic Wells-Dawson and Keggin heteropoly-acids along with tungsten trioxide under controlled atmosphere and temperature. The spectroscopic investigation of the Wells-Dawson HPA demonstrated that in situ Raman spectroscopy is a suitable technique to follow the effect of a gradual dehydration on the secondary structure of such a complex structure. Moreover, the absence of the signals belonging either to the Keggin or WO3 phases provides further evidence that the phosphotungstic heteropolyanion does not decomposes towards those materials at temperatures below 600 ºC.
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: Briand, Laura Estefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Bañares, Miguel Ángel . Instituto de Catálisis y Petroleoquímica. Laboratorio de Espectroscopia Catalítica; España
description The present investigation applies laser Raman spectroscopy under in situ conditions to obtain insights on the effect of the temperature on the molecular structure of the bulk phosphotungstic Wells-Dawson heteropoly-acid H6P2W18O62xH2O (HPA). The in situ temperature-programmed studies followed the evolution of phosphotungstic Wells-Dawson and Keggin heteropoly-acids along with tungsten trioxide under controlled atmosphere and temperature. The spectroscopic investigation of the Wells-Dawson HPA demonstrated that in situ Raman spectroscopy is a suitable technique to follow the effect of a gradual dehydration on the secondary structure of such a complex structure. Moreover, the absence of the signals belonging either to the Keggin or WO3 phases provides further evidence that the phosphotungstic heteropolyanion does not decomposes towards those materials at temperatures below 600 ºC.
publishDate 2011
dc.date.none.fl_str_mv 2011-07-20
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/11336/4779
Matkovic, Silvana Raquel; Briand, Laura Estefania; Bañares, Miguel Ángel ; Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy; Elsevier; Materials Research Bulletin; 46; 11; 20-7-2011; 1946-1948
0025-5408
url http://hdl.handle.net/11336/4779
identifier_str_mv Matkovic, Silvana Raquel; Briand, Laura Estefania; Bañares, Miguel Ángel ; Investigation of the thermal stability of fosfotungstic Wells-Dawson heteropoly acid through in situ Raman spectroscopy; Elsevier; Materials Research Bulletin; 46; 11; 20-7-2011; 1946-1948
0025-5408
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0025540811003308
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.materresbull.2011.07.015
info:eu-repo/semantics/altIdentifier/issn/0025-5408
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
publisher.none.fl_str_mv Elsevier
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_ 1843606445636976640
score 13.001348

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