Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization

The activity and selectivity of bi-functional carbon-supported platinum catalysts for the hydroisomerization of n-alkanes have been studied. The influence of the properties of the carbon support on the performance of the catalysts were investigated by incorporating the metallic function on a series...

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Autores: Fernandes, Sara, Andrade, Marta A., Ovín Ania, María Concepción, Martins, Angela, Pires, João, Carvalho, Ana P.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/98832
Acceso en línea:http://hdl.handle.net/10261/98832
Access Level:acceso abierto
Palabra clave:Bifunctional catalysts
Activated carbons
Ordered mesoporous carbon CMK-3
Acidity
n-Decane hydroisomerization
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spelling Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerizationFernandes, SaraAndrade, Marta A.Ovín Ania, María ConcepciónMartins, AngelaPires, JoãoCarvalho, Ana P.Bifunctional catalystsActivated carbonsOrdered mesoporous carbon CMK-3Acidityn-Decane hydroisomerizationThe activity and selectivity of bi-functional carbon-supported platinum catalysts for the hydroisomerization of n-alkanes have been studied. The influence of the properties of the carbon support on the performance of the catalysts were investigated by incorporating the metallic function on a series of carbons with varied porosity (microporous: GL-50 from Norit, and mesoporous: CMK-3) and surface chemistry (modified by wet oxidation). The characterization results achieved with H2 chemisorption and TEM showed differences in surface metal concentrations and metal–support interactions depending on the support composition. The highest metal dispersion was achieved after oxidation of the carbon matrix in concentrated nitric acid, suggesting that the presence of surface functional sites distributed in inner and outer surface favors a homogeneous metal distribution. On the other hand, the higher hydrogenating activity of the catalysts prepared with the mesoporous carbon pointed out that a fast molecular traffic inside the pores plays an important role in the catalysts performance. For n-decane hydroisomerization of long chain n-alkanes, higher activities were obtained for the catalysts with an optimized acidity and metal dispersion along with adequate porosity, pointing out the importance of the support properties in the performance of the catalysts.This work was financially supported by Fundação para a Ciência e Tecnologia (FCT) through Projects PTDC/CTM/65718/2006 and Pest-OE/QUI/UI0612/2011 (Strategic Project) and MINECO (CTM2011/23378). Authors wish to thank the collaboration of SALMON & Cia for supplying GL-50 carbon from NORITPeer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/98832reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.micromeso.2012.06.041Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/988322026-05-22T06:33:51Z
dc.title.none.fl_str_mv Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
title Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
spellingShingle Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
Fernandes, Sara
Bifunctional catalysts
Activated carbons
Ordered mesoporous carbon CMK-3
Acidity
n-Decane hydroisomerization
title_short Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
title_full Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
title_fullStr Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
title_full_unstemmed Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
title_sort Pt/carbon materials as bi-functional catalysts for n-decane hydroisomerization
dc.creator.none.fl_str_mv Fernandes, Sara
Andrade, Marta A.
Ovín Ania, María Concepción
Martins, Angela
Pires, João
Carvalho, Ana P.
author Fernandes, Sara
author_facet Fernandes, Sara
Andrade, Marta A.
Ovín Ania, María Concepción
Martins, Angela
Pires, João
Carvalho, Ana P.
author_role author
author2 Andrade, Marta A.
Ovín Ania, María Concepción
Martins, Angela
Pires, João
Carvalho, Ana P.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Bifunctional catalysts
Activated carbons
Ordered mesoporous carbon CMK-3
Acidity
n-Decane hydroisomerization
topic Bifunctional catalysts
Activated carbons
Ordered mesoporous carbon CMK-3
Acidity
n-Decane hydroisomerization
description The activity and selectivity of bi-functional carbon-supported platinum catalysts for the hydroisomerization of n-alkanes have been studied. The influence of the properties of the carbon support on the performance of the catalysts were investigated by incorporating the metallic function on a series of carbons with varied porosity (microporous: GL-50 from Norit, and mesoporous: CMK-3) and surface chemistry (modified by wet oxidation). The characterization results achieved with H2 chemisorption and TEM showed differences in surface metal concentrations and metal–support interactions depending on the support composition. The highest metal dispersion was achieved after oxidation of the carbon matrix in concentrated nitric acid, suggesting that the presence of surface functional sites distributed in inner and outer surface favors a homogeneous metal distribution. On the other hand, the higher hydrogenating activity of the catalysts prepared with the mesoporous carbon pointed out that a fast molecular traffic inside the pores plays an important role in the catalysts performance. For n-decane hydroisomerization of long chain n-alkanes, higher activities were obtained for the catalysts with an optimized acidity and metal dispersion along with adequate porosity, pointing out the importance of the support properties in the performance of the catalysts.
publishDate 2012
dc.date.none.fl_str_mv 2012
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/98832
url http://hdl.handle.net/10261/98832
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.micromeso.2012.06.041
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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