Combined TDPAC and EXAFS Study of InPt/FER Catalysts

Autores
Ramallo López, José Martín; Requejo, Félix Gregorio; Bibiloni, Aníbal Guillermo; Rentería, Mario; Gutierrez, Laura Beatriz; Miro, Eduardo Ernesto
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Time Differential Perturbed Angular Correlation (TDPAC) experiments using ¹¹¹ In as probe were performed in order to determine the nature of In-sites in In-ferrierite (In/FER), before and after the incorporation of Pt through the hyperfine interaction between the nuclear quadrupole moment of the probe’s nucleus and the extranuclear electric field gradient (EFG). Extended X-ray Absorption Fine Structure (EXAFS) measurements were performed to measure the absorbance above the Pt’s LIII absorption edge in the transmission mode in order to determine the local environment of Pt atoms in Pt/FER and InPt/FER catalysts. TDPAC spectra of ¹¹¹ In in In/FER and InPt/FER taken at 500 C in air indicated that there are no changes in the indium surroundings after the incorporation of Pt. Three sites were found for indium in both samples. Two of them correspond to the two sites of indium in In₂O₃ and the third one is attributed to In in exchange sites of the zeolites. Their population, quadrupole frequencies and asymmetry parameters didn't change with the incorporation of Pt. EXAFS experiments showed similar near neighborhood Pt-O distances and Pt coordination number in Pt/FER and InPt/FER samples. There is no evidence of the presence of any In-Pt bimetallic entity in InPt/FER catalyst.
Facultad de Ciencias Exactas
Materia
Física
Hyperfine interactions
TDPAC
EXAFS
Catalysis
Ferrierite
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/144146
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/144146
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Combined TDPAC and EXAFS Study of InPt/FER CatalystsRamallo López, José MartínRequejo, Félix GregorioBibiloni, Aníbal GuillermoRentería, MarioGutierrez, Laura BeatrizMiro, Eduardo ErnestoFísicaHyperfine interactionsTDPACEXAFSCatalysisFerrieriteTime Differential Perturbed Angular Correlation (TDPAC) experiments using ¹¹¹ In as probe were performed in order to determine the nature of In-sites in In-ferrierite (In/FER), before and after the incorporation of Pt through the hyperfine interaction between the nuclear quadrupole moment of the probe’s nucleus and the extranuclear electric field gradient (EFG). Extended X-ray Absorption Fine Structure (EXAFS) measurements were performed to measure the absorbance above the Pt’s LIII absorption edge in the transmission mode in order to determine the local environment of Pt atoms in Pt/FER and InPt/FER catalysts. TDPAC spectra of ¹¹¹ In in In/FER and InPt/FER taken at 500 C in air indicated that there are no changes in the indium surroundings after the incorporation of Pt. Three sites were found for indium in both samples. Two of them correspond to the two sites of indium in In₂O₃ and the third one is attributed to In in exchange sites of the zeolites. Their population, quadrupole frequencies and asymmetry parameters didn't change with the incorporation of Pt. EXAFS experiments showed similar near neighborhood Pt-O distances and Pt coordination number in Pt/FER and InPt/FER samples. There is no evidence of the presence of any In-Pt bimetallic entity in InPt/FER catalyst.Facultad de Ciencias Exactas2000info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf327-330http://sedici.unlp.edu.ar/handle/10915/144146enginfo:eu-repo/semantics/altIdentifier/issn/0932-0784info:eu-repo/semantics/altIdentifier/issn/1865-7109info:eu-repo/semantics/altIdentifier/doi/10.1515/zna-2000-1-257info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:24:15Zoai:sedici.unlp.edu.ar:10915/144146Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:24:16.086SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Combined TDPAC and EXAFS Study of InPt/FER Catalysts
title Combined TDPAC and EXAFS Study of InPt/FER Catalysts
spellingShingle Combined TDPAC and EXAFS Study of InPt/FER Catalysts
Ramallo López, José Martín
Física
Hyperfine interactions
TDPAC
EXAFS
Catalysis
Ferrierite
title_short Combined TDPAC and EXAFS Study of InPt/FER Catalysts
title_full Combined TDPAC and EXAFS Study of InPt/FER Catalysts
title_fullStr Combined TDPAC and EXAFS Study of InPt/FER Catalysts
title_full_unstemmed Combined TDPAC and EXAFS Study of InPt/FER Catalysts
title_sort Combined TDPAC and EXAFS Study of InPt/FER Catalysts
dc.creator.none.fl_str_mv Ramallo López, José Martín
Requejo, Félix Gregorio
Bibiloni, Aníbal Guillermo
Rentería, Mario
Gutierrez, Laura Beatriz
Miro, Eduardo Ernesto
author Ramallo López, José Martín
author_facet Ramallo López, José Martín
Requejo, Félix Gregorio
Bibiloni, Aníbal Guillermo
Rentería, Mario
Gutierrez, Laura Beatriz
Miro, Eduardo Ernesto
author_role author
author2 Requejo, Félix Gregorio
Bibiloni, Aníbal Guillermo
Rentería, Mario
Gutierrez, Laura Beatriz
Miro, Eduardo Ernesto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Física
Hyperfine interactions
TDPAC
EXAFS
Catalysis
Ferrierite
topic Física
Hyperfine interactions
TDPAC
EXAFS
Catalysis
Ferrierite
dc.description.none.fl_txt_mv Time Differential Perturbed Angular Correlation (TDPAC) experiments using ¹¹¹ In as probe were performed in order to determine the nature of In-sites in In-ferrierite (In/FER), before and after the incorporation of Pt through the hyperfine interaction between the nuclear quadrupole moment of the probe’s nucleus and the extranuclear electric field gradient (EFG). Extended X-ray Absorption Fine Structure (EXAFS) measurements were performed to measure the absorbance above the Pt’s LIII absorption edge in the transmission mode in order to determine the local environment of Pt atoms in Pt/FER and InPt/FER catalysts. TDPAC spectra of ¹¹¹ In in In/FER and InPt/FER taken at 500 C in air indicated that there are no changes in the indium surroundings after the incorporation of Pt. Three sites were found for indium in both samples. Two of them correspond to the two sites of indium in In₂O₃ and the third one is attributed to In in exchange sites of the zeolites. Their population, quadrupole frequencies and asymmetry parameters didn't change with the incorporation of Pt. EXAFS experiments showed similar near neighborhood Pt-O distances and Pt coordination number in Pt/FER and InPt/FER samples. There is no evidence of the presence of any In-Pt bimetallic entity in InPt/FER catalyst.
Facultad de Ciencias Exactas
description Time Differential Perturbed Angular Correlation (TDPAC) experiments using ¹¹¹ In as probe were performed in order to determine the nature of In-sites in In-ferrierite (In/FER), before and after the incorporation of Pt through the hyperfine interaction between the nuclear quadrupole moment of the probe’s nucleus and the extranuclear electric field gradient (EFG). Extended X-ray Absorption Fine Structure (EXAFS) measurements were performed to measure the absorbance above the Pt’s LIII absorption edge in the transmission mode in order to determine the local environment of Pt atoms in Pt/FER and InPt/FER catalysts. TDPAC spectra of ¹¹¹ In in In/FER and InPt/FER taken at 500 C in air indicated that there are no changes in the indium surroundings after the incorporation of Pt. Three sites were found for indium in both samples. Two of them correspond to the two sites of indium in In₂O₃ and the third one is attributed to In in exchange sites of the zeolites. Their population, quadrupole frequencies and asymmetry parameters didn't change with the incorporation of Pt. EXAFS experiments showed similar near neighborhood Pt-O distances and Pt coordination number in Pt/FER and InPt/FER samples. There is no evidence of the presence of any In-Pt bimetallic entity in InPt/FER catalyst.
publishDate 2000
dc.date.none.fl_str_mv 2000
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/144146
url http://sedici.unlp.edu.ar/handle/10915/144146
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0932-0784
info:eu-repo/semantics/altIdentifier/issn/1865-7109
info:eu-repo/semantics/altIdentifier/doi/10.1515/zna-2000-1-257
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
327-330
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.22299

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