Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation

The behavior of PtPb/MgAl2O4 catalysts in butenes production through the n-butane dehydrogenation has shown that at low contents, the Pb acts as promoter, improving the conversion and selectivity, whereas at higher contents it has a poisoning effect on the catalytic activity. The PtPb(0.25 wt%)/MgAl...

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Autores: Bocanegra, Sonia Alejandra, Scelza, Osvaldo Antonio, de Miguel, Sergio Ruben
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/22442
Acesso em linha:http://hdl.handle.net/11336/22442
Access Level:acceso abierto
Palavra-chave:Ptpb Catalysts
Ptpbin Catalysts
Olefins
Dehydrogenation
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
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spelling Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenationBocanegra, Sonia AlejandraScelza, Osvaldo Antoniode Miguel, Sergio RubenPtpb CatalystsPtpbin CatalystsOlefinsDehydrogenationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The behavior of PtPb/MgAl2O4 catalysts in butenes production through the n-butane dehydrogenation has shown that at low contents, the Pb acts as promoter, improving the conversion and selectivity, whereas at higher contents it has a poisoning effect on the catalytic activity. The PtPb(0.25 wt%)/MgAl2O4 catalyst showed the maximum yield to butenes. The characterization results of PtPb catalysts displayed that at low Pb contents there are both dilution and electronic effects of Pb on the Pt sites. On the other hand, at high Pb contents, there is a strong blocking effect of the Pb on the active sites of Pt. In order to study the effect of the In addition in different sequences to PtPb(0.25 wt%)/MgAl2O4 catalyst, two catalysts were prepared: PtPb(0.25%)In(0.28 wt%)/MgAl2O4 and PtIn(0.28%)Pb(0.25 wt%)/MgAl2O4. The first catalyst did not show significant advantages with respect to the catalytic behavior of the PtPb(0.25 wt%)/MgAl2O4, but the second trimetallic catalyst displayed an increase of both the conversion and the selectivity. The characterization results indicated similar effects of blocking and dilution of promoters on the active sites of Pt for both trimetallic catalysts, but the best catalyst, PtIn(0.28%)Pb(0.25 wt%)/MgAl2O4, showed the highest percentages of In◦ and Pb◦, thus indicating stronger interaction between Pt, Pb and In.Fil: Bocanegra, Sonia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaFil: Scelza, Osvaldo Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; 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 "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; ArgentinaElsevier2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22442Bocanegra, Sonia Alejandra; Scelza, Osvaldo Antonio; de Miguel, Sergio Ruben; Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation; Elsevier; Applied Catalysis A: General; 468; 8-2013; 135-1420926-860XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.apcata.2013.07.051info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0926860X13004614info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:07:36Zoai:ri.conicet.gov.ar:11336/22442instacron: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:34982024-05-08 14:07:36.274CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
title Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
spellingShingle Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
Bocanegra, Sonia Alejandra
Ptpb Catalysts
Ptpbin Catalysts
Olefins
Dehydrogenation
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
title_short Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
title_full Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
title_fullStr Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
title_full_unstemmed Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
title_sort Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation
dc.creator.none.fl_str_mv Bocanegra, Sonia Alejandra
Scelza, Osvaldo Antonio
de Miguel, Sergio Ruben
author Bocanegra, Sonia Alejandra
author_facet Bocanegra, Sonia Alejandra
Scelza, Osvaldo Antonio
de Miguel, Sergio Ruben
author_role author
author2 Scelza, Osvaldo Antonio
de Miguel, Sergio Ruben
author2_role author
author
dc.subject.none.fl_str_mv Ptpb Catalysts
Ptpbin Catalysts
Olefins
Dehydrogenation
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
topic Ptpb Catalysts
Ptpbin Catalysts
Olefins
Dehydrogenation
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
description The behavior of PtPb/MgAl2O4 catalysts in butenes production through the n-butane dehydrogenation has shown that at low contents, the Pb acts as promoter, improving the conversion and selectivity, whereas at higher contents it has a poisoning effect on the catalytic activity. The PtPb(0.25 wt%)/MgAl2O4 catalyst showed the maximum yield to butenes. The characterization results of PtPb catalysts displayed that at low Pb contents there are both dilution and electronic effects of Pb on the Pt sites. On the other hand, at high Pb contents, there is a strong blocking effect of the Pb on the active sites of Pt. In order to study the effect of the In addition in different sequences to PtPb(0.25 wt%)/MgAl2O4 catalyst, two catalysts were prepared: PtPb(0.25%)In(0.28 wt%)/MgAl2O4 and PtIn(0.28%)Pb(0.25 wt%)/MgAl2O4. The first catalyst did not show significant advantages with respect to the catalytic behavior of the PtPb(0.25 wt%)/MgAl2O4, but the second trimetallic catalyst displayed an increase of both the conversion and the selectivity. The characterization results indicated similar effects of blocking and dilution of promoters on the active sites of Pt for both trimetallic catalysts, but the best catalyst, PtIn(0.28%)Pb(0.25 wt%)/MgAl2O4, showed the highest percentages of In◦ and Pb◦, thus indicating stronger interaction between Pt, Pb and In.
publishDate 2013
dc.date.none.fl_str_mv 2013-08
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/11336/22442
Bocanegra, Sonia Alejandra; Scelza, Osvaldo Antonio; de Miguel, Sergio Ruben; Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation; Elsevier; Applied Catalysis A: General; 468; 8-2013; 135-142
0926-860X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22442
identifier_str_mv Bocanegra, Sonia Alejandra; Scelza, Osvaldo Antonio; de Miguel, Sergio Ruben; Behavior of PtPb/MgAl2O4 catalysts with different Pb contents and trimetallic PtPbIn catalysts in n-butane dehydrogenation; Elsevier; Applied Catalysis A: General; 468; 8-2013; 135-142
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.2013.07.051
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0926860X13004614
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
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,812429

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