Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties

Autores
Román Martínez, María Carmen; Cazorla Amorós, Diego; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Carbon-supported PtSn catalysts were prepared by impregnation using a commercial activated carbon after purification and oxidation (H2O2, 20 v/v%) treatments. The support surface chemistry of the carbon after purification and the oxidized carbon, and successive impregnation or coimpregnation procedures were the variables investigated. The catalysts obtained were characterized using the following techniques: TPD and TPR experiments, H2 chemisorption, XPS and XAFS, and activity assessment in the following reactions: cyclohexane dehydrogenation (reaction insensitive to structure), cyclopentane hydrogenolysis (reaction sensitive to structure) and carvone hydrogenation, which allows analysis of the selectivity of PtSn catalysts (carvone contains one C=O group and two C=C bonds for hydrogenation). The objective of the study is to find any relationships between the preparation procedure and the support properties, the characteristics of the resulting catalysts, and the catalytic behavior. The porosity of the carbon support together with the surface oxidation determines the accessibility of reactants to the active sites. Unusual selectivity to alcohols was found. Addition of tin caused blocking and dilution of the platinum clusters. The carbon support also affected the selectivity either because of its electronic properties or because of the particular metal structures developed.
Fil: Román Martínez, María Carmen. Universidad de Alicante; España
Fil: Cazorla Amorós, Diego. Universidad de Alicante; España
Fil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Materia
Platinum Tin Catalyst
Carbon Support
Carvone Hydrogenation
Xafs
Tpr
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:11336/55833
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/55833
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Carbon-supported PtSn Catalysts: Characterization and Catalytic PropertiesRomán Martínez, María CarmenCazorla Amorós, Diegode Miguel, Sergio RubenScelza, Osvaldo AntonioPlatinum Tin CatalystCarbon SupportCarvone HydrogenationXafsTprhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Carbon-supported PtSn catalysts were prepared by impregnation using a commercial activated carbon after purification and oxidation (H2O2, 20 v/v%) treatments. The support surface chemistry of the carbon after purification and the oxidized carbon, and successive impregnation or coimpregnation procedures were the variables investigated. The catalysts obtained were characterized using the following techniques: TPD and TPR experiments, H2 chemisorption, XPS and XAFS, and activity assessment in the following reactions: cyclohexane dehydrogenation (reaction insensitive to structure), cyclopentane hydrogenolysis (reaction sensitive to structure) and carvone hydrogenation, which allows analysis of the selectivity of PtSn catalysts (carvone contains one C=O group and two C=C bonds for hydrogenation). The objective of the study is to find any relationships between the preparation procedure and the support properties, the characteristics of the resulting catalysts, and the catalytic behavior. The porosity of the carbon support together with the surface oxidation determines the accessibility of reactants to the active sites. Unusual selectivity to alcohols was found. Addition of tin caused blocking and dilution of the platinum clusters. The carbon support also affected the selectivity either because of its electronic properties or because of the particular metal structures developed.Fil: Román Martínez, María Carmen. Universidad de Alicante; EspañaFil: Cazorla Amorós, Diego. Universidad de Alicante; EspañaFil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaJapan Petroleum Inst2004-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55833Román Martínez, María Carmen; Cazorla Amorós, Diego; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties; Japan Petroleum Inst; Journal Of The Japan Petroleum Institute; 47; 3; 12-2004; 164-1781346-88041349-273XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.jstage.jst.go.jp/article/jpi/47/3/47_3_164/_pdfinfo:eu-repo/semantics/altIdentifier/doi/10.1627/jpi.47.164info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:46Zoai:ri.conicet.gov.ar:11336/55833instacron: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 09:48:46.951CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
title Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
spellingShingle Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
Román Martínez, María Carmen
Platinum Tin Catalyst
Carbon Support
Carvone Hydrogenation
Xafs
Tpr
title_short Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
title_full Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
title_fullStr Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
title_full_unstemmed Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
title_sort Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties
dc.creator.none.fl_str_mv Román Martínez, María Carmen
Cazorla Amorós, Diego
de Miguel, Sergio Ruben
Scelza, Osvaldo Antonio
author Román Martínez, María Carmen
author_facet Román Martínez, María Carmen
Cazorla Amorós, Diego
de Miguel, Sergio Ruben
Scelza, Osvaldo Antonio
author_role author
author2 Cazorla Amorós, Diego
de Miguel, Sergio Ruben
Scelza, Osvaldo Antonio
author2_role author
author
author
dc.subject.none.fl_str_mv Platinum Tin Catalyst
Carbon Support
Carvone Hydrogenation
Xafs
Tpr
topic Platinum Tin Catalyst
Carbon Support
Carvone Hydrogenation
Xafs
Tpr
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Carbon-supported PtSn catalysts were prepared by impregnation using a commercial activated carbon after purification and oxidation (H2O2, 20 v/v%) treatments. The support surface chemistry of the carbon after purification and the oxidized carbon, and successive impregnation or coimpregnation procedures were the variables investigated. The catalysts obtained were characterized using the following techniques: TPD and TPR experiments, H2 chemisorption, XPS and XAFS, and activity assessment in the following reactions: cyclohexane dehydrogenation (reaction insensitive to structure), cyclopentane hydrogenolysis (reaction sensitive to structure) and carvone hydrogenation, which allows analysis of the selectivity of PtSn catalysts (carvone contains one C=O group and two C=C bonds for hydrogenation). The objective of the study is to find any relationships between the preparation procedure and the support properties, the characteristics of the resulting catalysts, and the catalytic behavior. The porosity of the carbon support together with the surface oxidation determines the accessibility of reactants to the active sites. Unusual selectivity to alcohols was found. Addition of tin caused blocking and dilution of the platinum clusters. The carbon support also affected the selectivity either because of its electronic properties or because of the particular metal structures developed.
Fil: Román Martínez, María Carmen. Universidad de Alicante; España
Fil: Cazorla Amorós, Diego. Universidad de Alicante; España
Fil: de Miguel, Sergio Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
description Carbon-supported PtSn catalysts were prepared by impregnation using a commercial activated carbon after purification and oxidation (H2O2, 20 v/v%) treatments. The support surface chemistry of the carbon after purification and the oxidized carbon, and successive impregnation or coimpregnation procedures were the variables investigated. The catalysts obtained were characterized using the following techniques: TPD and TPR experiments, H2 chemisorption, XPS and XAFS, and activity assessment in the following reactions: cyclohexane dehydrogenation (reaction insensitive to structure), cyclopentane hydrogenolysis (reaction sensitive to structure) and carvone hydrogenation, which allows analysis of the selectivity of PtSn catalysts (carvone contains one C=O group and two C=C bonds for hydrogenation). The objective of the study is to find any relationships between the preparation procedure and the support properties, the characteristics of the resulting catalysts, and the catalytic behavior. The porosity of the carbon support together with the surface oxidation determines the accessibility of reactants to the active sites. Unusual selectivity to alcohols was found. Addition of tin caused blocking and dilution of the platinum clusters. The carbon support also affected the selectivity either because of its electronic properties or because of the particular metal structures developed.
publishDate 2004
dc.date.none.fl_str_mv 2004-12
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/11336/55833
Román Martínez, María Carmen; Cazorla Amorós, Diego; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties; Japan Petroleum Inst; Journal Of The Japan Petroleum Institute; 47; 3; 12-2004; 164-178
1346-8804
1349-273X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55833
identifier_str_mv Román Martínez, María Carmen; Cazorla Amorós, Diego; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Carbon-supported PtSn Catalysts: Characterization and Catalytic Properties; Japan Petroleum Inst; Journal Of The Japan Petroleum Institute; 47; 3; 12-2004; 164-178
1346-8804
1349-273X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.jstage.jst.go.jp/article/jpi/47/3/47_3_164/_pdf
info:eu-repo/semantics/altIdentifier/doi/10.1627/jpi.47.164
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 Japan Petroleum Inst
publisher.none.fl_str_mv Japan Petroleum Inst
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_ 1842268938975576064
score 13.13397

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