Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite

Autores
Lima, Patrícia M.; Garetto, Teresita Francisca; Cavalcante Jr., Célio L.; Cardoso, Dilson
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The zeolite Beta used in this work consists of nanosized crystallites (20-30 nm) aggregates, determined by HRTEM analysis. The influence of the zeolite structure and crystallite size on the desorption rates of linear paraffins was determined by ZLC chromatography. Desorption from Beta zeolite was faster than from USY zeolite. IR acidity analysis by adsorption and desorption of pyridine showed that Beta zeolite has a smaller number of Brønsted acid sites than USY zeolite, but that they are a little stronger. Pt-Ni/H-BEA catalysts showed higher activity than Pt-Ni/H-USY ones. This behavior can be attributed to the very small crystallites of Beta zeolite, which enable faster diffusion of the reactant and products molecules. Among bimetallic catalysts, the highest activity was observed with that containing 60% Pt. This result is very interesting in view of the cost reduction, relative to 100% Pt catalyst.
Fil: Lima, Patrícia M.. Universidade do Brasília; Brasil
Fil: Garetto, Teresita Francisca. 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"; Argentina
Fil: Cavalcante Jr., Célio L.. Universidade Estadual do Ceará; Brasil
Fil: Cardoso, Dilson. Universidade Federal do São Carlos; Brasil
Materia
Alkane Isomerization
Beta Zeolite
Bimetallic Catalyst
Nanosized Crystals
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:11336/78584
Acceder
id CONICETDig_bb4720fa5487b21cfe893eba54a19d4e
oai_identifier_str oai:ri.conicet.gov.ar:11336/78584
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeoliteLima, Patrícia M.Garetto, Teresita FranciscaCavalcante Jr., Célio L.Cardoso, DilsonAlkane IsomerizationBeta ZeoliteBimetallic CatalystNanosized Crystalshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The zeolite Beta used in this work consists of nanosized crystallites (20-30 nm) aggregates, determined by HRTEM analysis. The influence of the zeolite structure and crystallite size on the desorption rates of linear paraffins was determined by ZLC chromatography. Desorption from Beta zeolite was faster than from USY zeolite. IR acidity analysis by adsorption and desorption of pyridine showed that Beta zeolite has a smaller number of Brønsted acid sites than USY zeolite, but that they are a little stronger. Pt-Ni/H-BEA catalysts showed higher activity than Pt-Ni/H-USY ones. This behavior can be attributed to the very small crystallites of Beta zeolite, which enable faster diffusion of the reactant and products molecules. Among bimetallic catalysts, the highest activity was observed with that containing 60% Pt. This result is very interesting in view of the cost reduction, relative to 100% Pt catalyst.Fil: Lima, Patrícia M.. Universidade do Brasília; BrasilFil: Garetto, Teresita Francisca. 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: Cavalcante Jr., Célio L.. Universidade Estadual do Ceará; BrasilFil: Cardoso, Dilson. Universidade Federal do São Carlos; BrasilElsevier Science2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/78584Lima, Patrícia M.; Garetto, Teresita Francisca; Cavalcante Jr., Célio L.; Cardoso, Dilson; Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 195-2020920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2011.02.031info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:04:59Zoai:ri.conicet.gov.ar:11336/78584instacron: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:34982025-09-10 13:05:00.041CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
title Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
spellingShingle Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
Lima, Patrícia M.
Alkane Isomerization
Beta Zeolite
Bimetallic Catalyst
Nanosized Crystals
title_short Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
title_full Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
title_fullStr Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
title_full_unstemmed Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
title_sort Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite
dc.creator.none.fl_str_mv Lima, Patrícia M.
Garetto, Teresita Francisca
Cavalcante Jr., Célio L.
Cardoso, Dilson
author Lima, Patrícia M.
author_facet Lima, Patrícia M.
Garetto, Teresita Francisca
Cavalcante Jr., Célio L.
Cardoso, Dilson
author_role author
author2 Garetto, Teresita Francisca
Cavalcante Jr., Célio L.
Cardoso, Dilson
author2_role author
author
author
dc.subject.none.fl_str_mv Alkane Isomerization
Beta Zeolite
Bimetallic Catalyst
Nanosized Crystals
topic Alkane Isomerization
Beta Zeolite
Bimetallic Catalyst
Nanosized Crystals
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 zeolite Beta used in this work consists of nanosized crystallites (20-30 nm) aggregates, determined by HRTEM analysis. The influence of the zeolite structure and crystallite size on the desorption rates of linear paraffins was determined by ZLC chromatography. Desorption from Beta zeolite was faster than from USY zeolite. IR acidity analysis by adsorption and desorption of pyridine showed that Beta zeolite has a smaller number of Brønsted acid sites than USY zeolite, but that they are a little stronger. Pt-Ni/H-BEA catalysts showed higher activity than Pt-Ni/H-USY ones. This behavior can be attributed to the very small crystallites of Beta zeolite, which enable faster diffusion of the reactant and products molecules. Among bimetallic catalysts, the highest activity was observed with that containing 60% Pt. This result is very interesting in view of the cost reduction, relative to 100% Pt catalyst.
Fil: Lima, Patrícia M.. Universidade do Brasília; Brasil
Fil: Garetto, Teresita Francisca. 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"; Argentina
Fil: Cavalcante Jr., Célio L.. Universidade Estadual do Ceará; Brasil
Fil: Cardoso, Dilson. Universidade Federal do São Carlos; Brasil
description The zeolite Beta used in this work consists of nanosized crystallites (20-30 nm) aggregates, determined by HRTEM analysis. The influence of the zeolite structure and crystallite size on the desorption rates of linear paraffins was determined by ZLC chromatography. Desorption from Beta zeolite was faster than from USY zeolite. IR acidity analysis by adsorption and desorption of pyridine showed that Beta zeolite has a smaller number of Brønsted acid sites than USY zeolite, but that they are a little stronger. Pt-Ni/H-BEA catalysts showed higher activity than Pt-Ni/H-USY ones. This behavior can be attributed to the very small crystallites of Beta zeolite, which enable faster diffusion of the reactant and products molecules. Among bimetallic catalysts, the highest activity was observed with that containing 60% Pt. This result is very interesting in view of the cost reduction, relative to 100% Pt catalyst.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
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/11336/78584
Lima, Patrícia M.; Garetto, Teresita Francisca; Cavalcante Jr., Célio L.; Cardoso, Dilson; Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 195-202
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/78584
identifier_str_mv Lima, Patrícia M.; Garetto, Teresita Francisca; Cavalcante Jr., Célio L.; Cardoso, Dilson; Isomerization of n-hexane on Pt-Ni catalysts supported on nanocrystalline H-BEA zeolite; Elsevier Science; Catalysis Today; 172; 1; 8-2011; 195-202
0920-5861
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.cattod.2011.02.031
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 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
_version_ 1842980171265605632
score 12.993085

Publicaciones similares