Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral

Autores
Stassi, Julieta Paola; Zgolicz, Patricia Daniela; Rodriguez, Virginia Ines; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this paper, bimetallic PtGa and PtIn catalysts supported on multiwall carbon nanotubes and carbon Vulcan were used to study the hydrogenation of citral (alpha,beta-unsaturated aldehyde) in liquid phase to produce nerol and geraniol (unsaturated alcohols, UA). The catalysts were prepared with different metallic loadings by conventional impregnation. All the catalysts contained a Pt loading of 5wt%. Once reduced under hydrogen flow, the supported catalysts were characterized by test reactions of the metallic phase, H2 chemisorption, temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Hydrogenation results showed that the addition of a second metal to Pt leads to important modifications of the selectivity to UA. The highest selectivities to UA were reached with different promotor/Pt atomic ratios for Ga and In. The catalyst performances in the citral hydrogenation were related to the characteristics of each supported bimetallic phase. It was found that the PtGa catalysts have a typical behavior of an ionic promoter together with a contribution of the Ga reduced species, reaching high selectivities to UA. On the other hand, PtIn catalysts with a metallic phase composed mainly by zerovalent In species in contact with the metallic phase,also showed high activities and selectivities to UA. The best selectivity value to UA (about 97%) was found for PtIn(2.5wt%)/CN-P catalyst with an excellent activity.
Fil: Stassi, Julieta Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Zgolicz, Patricia Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Rodriguez, Virginia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
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
Multiwall Carbon Nanotubes
Carbon Vulcan Xc-72
Bimetallic Catalysts
Metallic Phase Characterization
Citral Hydrogenation
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:11336/36651
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/36651
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citralStassi, Julieta PaolaZgolicz, Patricia DanielaRodriguez, Virginia Inesde Miguel, Sergio RubenScelza, Osvaldo AntonioMultiwall Carbon NanotubesCarbon Vulcan Xc-72Bimetallic CatalystsMetallic Phase CharacterizationCitral Hydrogenationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this paper, bimetallic PtGa and PtIn catalysts supported on multiwall carbon nanotubes and carbon Vulcan were used to study the hydrogenation of citral (alpha,beta-unsaturated aldehyde) in liquid phase to produce nerol and geraniol (unsaturated alcohols, UA). The catalysts were prepared with different metallic loadings by conventional impregnation. All the catalysts contained a Pt loading of 5wt%. Once reduced under hydrogen flow, the supported catalysts were characterized by test reactions of the metallic phase, H2 chemisorption, temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Hydrogenation results showed that the addition of a second metal to Pt leads to important modifications of the selectivity to UA. The highest selectivities to UA were reached with different promotor/Pt atomic ratios for Ga and In. The catalyst performances in the citral hydrogenation were related to the characteristics of each supported bimetallic phase. It was found that the PtGa catalysts have a typical behavior of an ionic promoter together with a contribution of the Ga reduced species, reaching high selectivities to UA. On the other hand, PtIn catalysts with a metallic phase composed mainly by zerovalent In species in contact with the metallic phase,also showed high activities and selectivities to UA. The best selectivity value to UA (about 97%) was found for PtIn(2.5wt%)/CN-P catalyst with an excellent activity.Fil: Stassi, Julieta Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Zgolicz, Patricia Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Rodriguez, Virginia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: 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 ; ArgentinaElsevier Science2015-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/36651Stassi, Julieta Paola; Zgolicz, Patricia Daniela; Rodriguez, Virginia Ines; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral; Elsevier Science; Applied Catalysis A: General; 497; 5-2015; 58-710926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2015.01.046info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X15001313info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:55Zoai:ri.conicet.gov.ar:11336/36651instacron: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 09:53:55.528CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
title Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
spellingShingle Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
Stassi, Julieta Paola
Multiwall Carbon Nanotubes
Carbon Vulcan Xc-72
Bimetallic Catalysts
Metallic Phase Characterization
Citral Hydrogenation
title_short Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
title_full Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
title_fullStr Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
title_full_unstemmed Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
title_sort Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral
dc.creator.none.fl_str_mv Stassi, Julieta Paola
Zgolicz, Patricia Daniela
Rodriguez, Virginia Ines
de Miguel, Sergio Ruben
Scelza, Osvaldo Antonio
author Stassi, Julieta Paola
author_facet Stassi, Julieta Paola
Zgolicz, Patricia Daniela
Rodriguez, Virginia Ines
de Miguel, Sergio Ruben
Scelza, Osvaldo Antonio
author_role author
author2 Zgolicz, Patricia Daniela
Rodriguez, Virginia Ines
de Miguel, Sergio Ruben
Scelza, Osvaldo Antonio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Multiwall Carbon Nanotubes
Carbon Vulcan Xc-72
Bimetallic Catalysts
Metallic Phase Characterization
Citral Hydrogenation
topic Multiwall Carbon Nanotubes
Carbon Vulcan Xc-72
Bimetallic Catalysts
Metallic Phase Characterization
Citral Hydrogenation
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this paper, bimetallic PtGa and PtIn catalysts supported on multiwall carbon nanotubes and carbon Vulcan were used to study the hydrogenation of citral (alpha,beta-unsaturated aldehyde) in liquid phase to produce nerol and geraniol (unsaturated alcohols, UA). The catalysts were prepared with different metallic loadings by conventional impregnation. All the catalysts contained a Pt loading of 5wt%. Once reduced under hydrogen flow, the supported catalysts were characterized by test reactions of the metallic phase, H2 chemisorption, temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Hydrogenation results showed that the addition of a second metal to Pt leads to important modifications of the selectivity to UA. The highest selectivities to UA were reached with different promotor/Pt atomic ratios for Ga and In. The catalyst performances in the citral hydrogenation were related to the characteristics of each supported bimetallic phase. It was found that the PtGa catalysts have a typical behavior of an ionic promoter together with a contribution of the Ga reduced species, reaching high selectivities to UA. On the other hand, PtIn catalysts with a metallic phase composed mainly by zerovalent In species in contact with the metallic phase,also showed high activities and selectivities to UA. The best selectivity value to UA (about 97%) was found for PtIn(2.5wt%)/CN-P catalyst with an excellent activity.
Fil: Stassi, Julieta Paola. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Zgolicz, Patricia Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Rodriguez, Virginia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
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 In this paper, bimetallic PtGa and PtIn catalysts supported on multiwall carbon nanotubes and carbon Vulcan were used to study the hydrogenation of citral (alpha,beta-unsaturated aldehyde) in liquid phase to produce nerol and geraniol (unsaturated alcohols, UA). The catalysts were prepared with different metallic loadings by conventional impregnation. All the catalysts contained a Pt loading of 5wt%. Once reduced under hydrogen flow, the supported catalysts were characterized by test reactions of the metallic phase, H2 chemisorption, temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Hydrogenation results showed that the addition of a second metal to Pt leads to important modifications of the selectivity to UA. The highest selectivities to UA were reached with different promotor/Pt atomic ratios for Ga and In. The catalyst performances in the citral hydrogenation were related to the characteristics of each supported bimetallic phase. It was found that the PtGa catalysts have a typical behavior of an ionic promoter together with a contribution of the Ga reduced species, reaching high selectivities to UA. On the other hand, PtIn catalysts with a metallic phase composed mainly by zerovalent In species in contact with the metallic phase,also showed high activities and selectivities to UA. The best selectivity value to UA (about 97%) was found for PtIn(2.5wt%)/CN-P catalyst with an excellent activity.
publishDate 2015
dc.date.none.fl_str_mv 2015-05
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/11336/36651
Stassi, Julieta Paola; Zgolicz, Patricia Daniela; Rodriguez, Virginia Ines; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral; Elsevier Science; Applied Catalysis A: General; 497; 5-2015; 58-71
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/36651
identifier_str_mv Stassi, Julieta Paola; Zgolicz, Patricia Daniela; Rodriguez, Virginia Ines; de Miguel, Sergio Ruben; Scelza, Osvaldo Antonio; Ga and In promoters in bimetallic Pt based catalysts to improve the performance in the selective hydrogenation of citral; Elsevier Science; Applied Catalysis A: General; 497; 5-2015; 58-71
0926-860X
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/j.apcata.2015.01.046
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X15001313
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
application/pdf
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 13.13397

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