Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation

Autores
Casella, Mónica Laura; Siri, Guillermo Jorge; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Ramırez Corredores, Maria Magdalena
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The superficial properties of different Pt/γ-Al2O3 catalysts, modified by the addition of tin and/or lithium, were studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, BET, and 2-propanol transformation. The results obtained were correlated with the behavior of the catalysts in applied reactions such as the dehydrogenation of isobutane. To obtain very well defined bimetallic superficial phases, tin was introduced by means of surface organometallic chemistry on metals techniques and the nature of the bimetallic-active sites so obtained was compared with the ones prepared by conventional procedures. XPS measurements indicate that tin is present in both zeroth valent and oxidized states. The addition procedure of both tin and lithium has a marked influence on the characteristics of the surface of the catalysts. The order in which lithium is added generates solids having different properties in relation to texture, dispersion, and catalytic behavior, for both Pt and PtSn systems.
Fil: Casella, Mónica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Siri, Guillermo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Santori, Gerardo Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Ferretti, Osmar Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Ramırez Corredores, Maria Magdalena. INTEVEP; Venezuela
Materia
Catalysts
Isobutane
Li-Modified
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:11336/45014
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/45014
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane DehydrogenationCasella, Mónica LauraSiri, Guillermo JorgeSantori, Gerardo FabianFerretti, Osmar AlbertoRamırez Corredores, Maria MagdalenaCatalystsIsobutaneLi-Modifiedhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The superficial properties of different Pt/γ-Al2O3 catalysts, modified by the addition of tin and/or lithium, were studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, BET, and 2-propanol transformation. The results obtained were correlated with the behavior of the catalysts in applied reactions such as the dehydrogenation of isobutane. To obtain very well defined bimetallic superficial phases, tin was introduced by means of surface organometallic chemistry on metals techniques and the nature of the bimetallic-active sites so obtained was compared with the ones prepared by conventional procedures. XPS measurements indicate that tin is present in both zeroth valent and oxidized states. The addition procedure of both tin and lithium has a marked influence on the characteristics of the surface of the catalysts. The order in which lithium is added generates solids having different properties in relation to texture, dispersion, and catalytic behavior, for both Pt and PtSn systems.Fil: Casella, Mónica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Siri, Guillermo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Santori, Gerardo Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Ferretti, Osmar Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Ramırez Corredores, Maria Magdalena. INTEVEP; VenezuelaAmerican Chemical Society2000-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/45014Casella, Mónica Laura; Siri, Guillermo Jorge; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Ramırez Corredores, Maria Magdalena; Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation; American Chemical Society; Langmuir; 16; 13; 6-2000; 5639-56430743-7463CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/la991437rinfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/la991437rinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:49:53Zoai:ri.conicet.gov.ar:11336/45014instacron: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:34982025-09-03 09:49:54.352CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
title Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
spellingShingle Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
Casella, Mónica Laura
Catalysts
Isobutane
Li-Modified
title_short Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
title_full Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
title_fullStr Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
title_full_unstemmed Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
title_sort Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation
dc.creator.none.fl_str_mv Casella, Mónica Laura
Siri, Guillermo Jorge
Santori, Gerardo Fabian
Ferretti, Osmar Alberto
Ramırez Corredores, Maria Magdalena
author Casella, Mónica Laura
author_facet Casella, Mónica Laura
Siri, Guillermo Jorge
Santori, Gerardo Fabian
Ferretti, Osmar Alberto
Ramırez Corredores, Maria Magdalena
author_role author
author2 Siri, Guillermo Jorge
Santori, Gerardo Fabian
Ferretti, Osmar Alberto
Ramırez Corredores, Maria Magdalena
author2_role author
author
author
author
dc.subject.none.fl_str_mv Catalysts
Isobutane
Li-Modified
topic Catalysts
Isobutane
Li-Modified
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 superficial properties of different Pt/γ-Al2O3 catalysts, modified by the addition of tin and/or lithium, were studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, BET, and 2-propanol transformation. The results obtained were correlated with the behavior of the catalysts in applied reactions such as the dehydrogenation of isobutane. To obtain very well defined bimetallic superficial phases, tin was introduced by means of surface organometallic chemistry on metals techniques and the nature of the bimetallic-active sites so obtained was compared with the ones prepared by conventional procedures. XPS measurements indicate that tin is present in both zeroth valent and oxidized states. The addition procedure of both tin and lithium has a marked influence on the characteristics of the surface of the catalysts. The order in which lithium is added generates solids having different properties in relation to texture, dispersion, and catalytic behavior, for both Pt and PtSn systems.
Fil: Casella, Mónica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Siri, Guillermo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Santori, Gerardo Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Ferretti, Osmar Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Ramırez Corredores, Maria Magdalena. INTEVEP; Venezuela
description The superficial properties of different Pt/γ-Al2O3 catalysts, modified by the addition of tin and/or lithium, were studied by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy, BET, and 2-propanol transformation. The results obtained were correlated with the behavior of the catalysts in applied reactions such as the dehydrogenation of isobutane. To obtain very well defined bimetallic superficial phases, tin was introduced by means of surface organometallic chemistry on metals techniques and the nature of the bimetallic-active sites so obtained was compared with the ones prepared by conventional procedures. XPS measurements indicate that tin is present in both zeroth valent and oxidized states. The addition procedure of both tin and lithium has a marked influence on the characteristics of the surface of the catalysts. The order in which lithium is added generates solids having different properties in relation to texture, dispersion, and catalytic behavior, for both Pt and PtSn systems.
publishDate 2000
dc.date.none.fl_str_mv 2000-06
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/11336/45014
Casella, Mónica Laura; Siri, Guillermo Jorge; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Ramırez Corredores, Maria Magdalena; Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation; American Chemical Society; Langmuir; 16; 13; 6-2000; 5639-5643
0743-7463
CONICET Digital
CONICET
url http://hdl.handle.net/11336/45014
identifier_str_mv Casella, Mónica Laura; Siri, Guillermo Jorge; Santori, Gerardo Fabian; Ferretti, Osmar Alberto; Ramırez Corredores, Maria Magdalena; Surface Characterization of Li-Modified Platinum/Tin Catalysts for Isobutane Dehydrogenation; American Chemical Society; Langmuir; 16; 13; 6-2000; 5639-5643
0743-7463
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/la991437r
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/la991437r
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
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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_ 1842269000546910208
score 13.13397

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