Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties

Autores
Alvarez, Ana María; Marchetti, Sergio Gustavo; Cagnoli, Maria Virginia; Bengoa, Jose Fernando; Mercader, Roberto Carlos; Yeramián, Arturo Avedis
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The chemisorption properties of two solids, called Fe/ZLK and Fe/ZLH were studied. The samples were obtained by dry impregnation of potassic and acidic forms of zeolite-L with a ferric salt, as described in Part I. The adsorption isotherms of CO at 193 K and H2 at 673 K were measured. “In situ” Mössbauer spectroscopy (MS) at 298 and 193 K of the reduced solids with chemisorbed CO allowed to confirm the preferential location of the Fe2+ exchanged with the support in both samples, in agreement with that obtained in Part I: sites D for Fe/ZLK and sites A for Fe/ZLH. The CO chemisorption resulted in an inappropriate method to obtain the metallic area of reduced Fe/ZLK, since Fe2+ ions in sites D also chemisorb CO with a 1:2=Fe2+:CO stoichiometry. In order to obtain the amount of Fe0 surface atoms, H2 chemisorption at 673 K in 10–80 Torr pressure range was successfully used. Combining this technique with MS, it was possible to determine the values of the Fe0 crystal diameters.
Fil: Alvarez, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Cagnoli, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Mercader, Roberto Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Yeramián, Arturo Avedis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Materia
Zeolite-L
Iron Supported on Zeolites
Mossbauer Spectroscopy
Volumetric Oxidation
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:11336/42615
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/42615
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural propertiesAlvarez, Ana MaríaMarchetti, Sergio GustavoCagnoli, Maria VirginiaBengoa, Jose FernandoMercader, Roberto CarlosYeramián, Arturo AvedisZeolite-LIron Supported on ZeolitesMossbauer SpectroscopyVolumetric Oxidationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The chemisorption properties of two solids, called Fe/ZLK and Fe/ZLH were studied. The samples were obtained by dry impregnation of potassic and acidic forms of zeolite-L with a ferric salt, as described in Part I. The adsorption isotherms of CO at 193 K and H2 at 673 K were measured. “In situ” Mössbauer spectroscopy (MS) at 298 and 193 K of the reduced solids with chemisorbed CO allowed to confirm the preferential location of the Fe2+ exchanged with the support in both samples, in agreement with that obtained in Part I: sites D for Fe/ZLK and sites A for Fe/ZLH. The CO chemisorption resulted in an inappropriate method to obtain the metallic area of reduced Fe/ZLK, since Fe2+ ions in sites D also chemisorb CO with a 1:2=Fe2+:CO stoichiometry. In order to obtain the amount of Fe0 surface atoms, H2 chemisorption at 673 K in 10–80 Torr pressure range was successfully used. Combining this technique with MS, it was possible to determine the values of the Fe0 crystal diameters.Fil: Alvarez, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Cagnoli, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaFil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; ArgentinaFil: Mercader, Roberto Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Yeramián, Arturo Avedis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; ArgentinaElsevier Science2000-09-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/42615Alvarez, Ana María; Marchetti, Sergio Gustavo; Cagnoli, Maria Virginia; Bengoa, Jose Fernando; Mercader, Roberto Carlos; et al.; Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties; Elsevier Science; Applied Surface Science; 165; 2-3; 15-9-2000; 100-1080169-4332CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0169-4332(00)00363-9info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169433200003639info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T10:40:16Zoai:ri.conicet.gov.ar:11336/42615instacron: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:34982025-11-05 10:40:17.142CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
title Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
spellingShingle Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
Alvarez, Ana María
Zeolite-L
Iron Supported on Zeolites
Mossbauer Spectroscopy
Volumetric Oxidation
title_short Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
title_full Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
title_fullStr Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
title_full_unstemmed Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
title_sort Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties
dc.creator.none.fl_str_mv Alvarez, Ana María
Marchetti, Sergio Gustavo
Cagnoli, Maria Virginia
Bengoa, Jose Fernando
Mercader, Roberto Carlos
Yeramián, Arturo Avedis
author Alvarez, Ana María
author_facet Alvarez, Ana María
Marchetti, Sergio Gustavo
Cagnoli, Maria Virginia
Bengoa, Jose Fernando
Mercader, Roberto Carlos
Yeramián, Arturo Avedis
author_role author
author2 Marchetti, Sergio Gustavo
Cagnoli, Maria Virginia
Bengoa, Jose Fernando
Mercader, Roberto Carlos
Yeramián, Arturo Avedis
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Zeolite-L
Iron Supported on Zeolites
Mossbauer Spectroscopy
Volumetric Oxidation
topic Zeolite-L
Iron Supported on Zeolites
Mossbauer Spectroscopy
Volumetric Oxidation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The chemisorption properties of two solids, called Fe/ZLK and Fe/ZLH were studied. The samples were obtained by dry impregnation of potassic and acidic forms of zeolite-L with a ferric salt, as described in Part I. The adsorption isotherms of CO at 193 K and H2 at 673 K were measured. “In situ” Mössbauer spectroscopy (MS) at 298 and 193 K of the reduced solids with chemisorbed CO allowed to confirm the preferential location of the Fe2+ exchanged with the support in both samples, in agreement with that obtained in Part I: sites D for Fe/ZLK and sites A for Fe/ZLH. The CO chemisorption resulted in an inappropriate method to obtain the metallic area of reduced Fe/ZLK, since Fe2+ ions in sites D also chemisorb CO with a 1:2=Fe2+:CO stoichiometry. In order to obtain the amount of Fe0 surface atoms, H2 chemisorption at 673 K in 10–80 Torr pressure range was successfully used. Combining this technique with MS, it was possible to determine the values of the Fe0 crystal diameters.
Fil: Alvarez, Ana María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Marchetti, Sergio Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Cagnoli, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
Fil: Bengoa, Jose Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
Fil: Mercader, Roberto Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Yeramián, Arturo Avedis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
description The chemisorption properties of two solids, called Fe/ZLK and Fe/ZLH were studied. The samples were obtained by dry impregnation of potassic and acidic forms of zeolite-L with a ferric salt, as described in Part I. The adsorption isotherms of CO at 193 K and H2 at 673 K were measured. “In situ” Mössbauer spectroscopy (MS) at 298 and 193 K of the reduced solids with chemisorbed CO allowed to confirm the preferential location of the Fe2+ exchanged with the support in both samples, in agreement with that obtained in Part I: sites D for Fe/ZLK and sites A for Fe/ZLH. The CO chemisorption resulted in an inappropriate method to obtain the metallic area of reduced Fe/ZLK, since Fe2+ ions in sites D also chemisorb CO with a 1:2=Fe2+:CO stoichiometry. In order to obtain the amount of Fe0 surface atoms, H2 chemisorption at 673 K in 10–80 Torr pressure range was successfully used. Combining this technique with MS, it was possible to determine the values of the Fe0 crystal diameters.
publishDate 2000
dc.date.none.fl_str_mv 2000-09-15
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/11336/42615
Alvarez, Ana María; Marchetti, Sergio Gustavo; Cagnoli, Maria Virginia; Bengoa, Jose Fernando; Mercader, Roberto Carlos; et al.; Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties; Elsevier Science; Applied Surface Science; 165; 2-3; 15-9-2000; 100-108
0169-4332
CONICET Digital
CONICET
url http://hdl.handle.net/11336/42615
identifier_str_mv Alvarez, Ana María; Marchetti, Sergio Gustavo; Cagnoli, Maria Virginia; Bengoa, Jose Fernando; Mercader, Roberto Carlos; et al.; Study of the Ferzeolite-L system Part I: Characterization of iron species and their structural properties; Elsevier Science; Applied Surface Science; 165; 2-3; 15-9-2000; 100-108
0169-4332
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/S0169-4332(00)00363-9
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169433200003639
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 Science
publisher.none.fl_str_mv Elsevier Science
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 13.087074

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