Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid

Autores
Bonivardi, Adrian Lionel; Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bañares, Miguel A.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The combination of both infrared and Raman spectroscopy are powerful tools to obtain information of catalytic materials at a molecular level. The present investigation shows, a systematic study in situ about the effects of the temperature in the molecular structure of the supported phosphotungstic Wells-Dawson heteropolyacid (HPA). The infrared and Raman analyses of the samples were performed under in situ conditions from RT to 500 oC range in flowing helium. The oxide supported heteropolyacid was synthesized through a conventional impregnation method (in aqueous) at theoretical monolayer coverage. These studies provided evidences on the dehydration of the HPA upon in situ calcination. Moreover, the in situ investigation allows establishing the surface molecular structure or the thermal stability of the HPA. Additionally, the presence of crystals of HPA over TiO2 suggests that the theoretical monolayer loading should be re-evaluated.
Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Conicet- Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
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 - Conicet- Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Bañares, Miguel A.. Consejo Superior de Investigaciones Científicas; España
Materia
Hpa
Ir in Situ
Theoretical Monolayer
Thermal Stability
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:11336/2970
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/2970
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson HeteropolyacidBonivardi, Adrian LionelMatkovic, Silvana RaquelCollins, Sebastián EnriqueBañares, Miguel A.HpaIr in SituTheoretical MonolayerThermal Stabilityhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The combination of both infrared and Raman spectroscopy are powerful tools to obtain information of catalytic materials at a molecular level. The present investigation shows, a systematic study in situ about the effects of the temperature in the molecular structure of the supported phosphotungstic Wells-Dawson heteropolyacid (HPA). The infrared and Raman analyses of the samples were performed under in situ conditions from RT to 500 oC range in flowing helium. The oxide supported heteropolyacid was synthesized through a conventional impregnation method (in aqueous) at theoretical monolayer coverage. These studies provided evidences on the dehydration of the HPA upon in situ calcination. Moreover, the in situ investigation allows establishing the surface molecular structure or the thermal stability of the HPA. Additionally, the presence of crystals of HPA over TiO2 suggests that the theoretical monolayer loading should be re-evaluated.Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Conicet- Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: 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 - Conicet- Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Bañares, Miguel A.. Consejo Superior de Investigaciones Científicas; EspañaBentham Science Publishers2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2970Bonivardi, Adrian Lionel; Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bañares, Miguel A.; Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid; Bentham Science Publishers; Current Catalysis; 3; 2; 4-2014; 199-2052211-54472211-5455enginfo:eu-repo/semantics/altIdentifier/url/https://www.eurekaselect.com/article/58583info:eu-repo/semantics/altIdentifier/doi/10.2174/2211544702666140110233407info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:51:37Zoai:ri.conicet.gov.ar:11336/2970instacron: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 11:51:37.971CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
title Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
spellingShingle Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
Bonivardi, Adrian Lionel
Hpa
Ir in Situ
Theoretical Monolayer
Thermal Stability
title_short Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
title_full Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
title_fullStr Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
title_full_unstemmed Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
title_sort Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid
dc.creator.none.fl_str_mv Bonivardi, Adrian Lionel
Matkovic, Silvana Raquel
Collins, Sebastián Enrique
Bañares, Miguel A.
author Bonivardi, Adrian Lionel
author_facet Bonivardi, Adrian Lionel
Matkovic, Silvana Raquel
Collins, Sebastián Enrique
Bañares, Miguel A.
author_role author
author2 Matkovic, Silvana Raquel
Collins, Sebastián Enrique
Bañares, Miguel A.
author2_role author
author
author
dc.subject.none.fl_str_mv Hpa
Ir in Situ
Theoretical Monolayer
Thermal Stability
topic Hpa
Ir in Situ
Theoretical Monolayer
Thermal Stability
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The combination of both infrared and Raman spectroscopy are powerful tools to obtain information of catalytic materials at a molecular level. The present investigation shows, a systematic study in situ about the effects of the temperature in the molecular structure of the supported phosphotungstic Wells-Dawson heteropolyacid (HPA). The infrared and Raman analyses of the samples were performed under in situ conditions from RT to 500 oC range in flowing helium. The oxide supported heteropolyacid was synthesized through a conventional impregnation method (in aqueous) at theoretical monolayer coverage. These studies provided evidences on the dehydration of the HPA upon in situ calcination. Moreover, the in situ investigation allows establishing the surface molecular structure or the thermal stability of the HPA. Additionally, the presence of crystals of HPA over TiO2 suggests that the theoretical monolayer loading should be re-evaluated.
Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Conicet- Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
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 - Conicet- Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Bañares, Miguel A.. Consejo Superior de Investigaciones Científicas; España
description The combination of both infrared and Raman spectroscopy are powerful tools to obtain information of catalytic materials at a molecular level. The present investigation shows, a systematic study in situ about the effects of the temperature in the molecular structure of the supported phosphotungstic Wells-Dawson heteropolyacid (HPA). The infrared and Raman analyses of the samples were performed under in situ conditions from RT to 500 oC range in flowing helium. The oxide supported heteropolyacid was synthesized through a conventional impregnation method (in aqueous) at theoretical monolayer coverage. These studies provided evidences on the dehydration of the HPA upon in situ calcination. Moreover, the in situ investigation allows establishing the surface molecular structure or the thermal stability of the HPA. Additionally, the presence of crystals of HPA over TiO2 suggests that the theoretical monolayer loading should be re-evaluated.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
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/11336/2970
Bonivardi, Adrian Lionel; Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bañares, Miguel A.; Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid; Bentham Science Publishers; Current Catalysis; 3; 2; 4-2014; 199-205
2211-5447
2211-5455
url http://hdl.handle.net/11336/2970
identifier_str_mv Bonivardi, Adrian Lionel; Matkovic, Silvana Raquel; Collins, Sebastián Enrique; Bañares, Miguel A.; Infrared and Raman Investigation of Supported Phosphotungstic Wells- Dawson Heteropolyacid; Bentham Science Publishers; Current Catalysis; 3; 2; 4-2014; 199-205
2211-5447
2211-5455
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.eurekaselect.com/article/58583
info:eu-repo/semantics/altIdentifier/doi/10.2174/2211544702666140110233407
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 Bentham Science Publishers
publisher.none.fl_str_mv Bentham Science Publishers
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_ 1846782203895218176
score 12.982451

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