Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba

Autores
Siri, Guillermo Jorge; Bertolini, Guillermo Ramón; Ferretti, Osmar
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The behavior of catalysts based on Pt/y -Al2O3 is analyzed in the CO oxidation reaction. Experiments were performed in the temperature range between 50°C and 250°C with a feed H2 rich, and a concentration of 1% CO and 0.6% O2 Catalysts studied were: monometallic Pt/ y-Al2O3, bimetallic PtSn/ -Al2O3 with a ratio Sn/Pt=1.6 at/at and two catalysts prepared by modification of the last one with K or Ba. The catalyst that showed maximum activity and selectivity levels is the PtSnK/y -Al2O3. The tin addition increases the activity which allows the reaction to occur at lower temperatures due to the decrease in the CO-Pt interaction. The addition of K or Ba produces a subsequent improvement with respect to the CO oxidation temperature, which leads to a selectivity increase. The selectivity of the CO oxidation passes through a maximum value as a function of the temperature. This maximum is explained by the importance acquired by the reverse of water gas shift reaction at temperatures near 200ºC
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Materia
Química
Preferential oxidation
Hydrogen purification
Ptsn/y-AI2O3
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/99917
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/99917
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or BaSiri, Guillermo JorgeBertolini, Guillermo RamónFerretti, OsmarQuímicaPreferential oxidationHydrogen purificationPtsn/y-AI2O3The behavior of catalysts based on Pt/y -Al2O3 is analyzed in the CO oxidation reaction. Experiments were performed in the temperature range between 50°C and 250°C with a feed H2 rich, and a concentration of 1% CO and 0.6% O2 Catalysts studied were: monometallic Pt/ y-Al2O3, bimetallic PtSn/ -Al2O3 with a ratio Sn/Pt=1.6 at/at and two catalysts prepared by modification of the last one with K or Ba. The catalyst that showed maximum activity and selectivity levels is the PtSnK/y -Al2O3. The tin addition increases the activity which allows the reaction to occur at lower temperatures due to the decrease in the CO-Pt interaction. The addition of K or Ba produces a subsequent improvement with respect to the CO oxidation temperature, which leads to a selectivity increase. The selectivity of the CO oxidation passes through a maximum value as a function of the temperature. This maximum is explained by the importance acquired by the reverse of water gas shift reaction at temperatures near 200ºCCentro de Investigación y Desarrollo en Ciencias Aplicadas2007-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf275-281http://sedici.unlp.edu.ar/handle/10915/99917enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/16655info:eu-repo/semantics/altIdentifier/url/http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-07932007000400008&lng=es&nrm=iso&tlng=eninfo:eu-repo/semantics/altIdentifier/issn/1851-8796info:eu-repo/semantics/altIdentifier/hdl/11336/16655info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:19:55Zoai:sedici.unlp.edu.ar:10915/99917Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:56.224SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
title Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
spellingShingle Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
Siri, Guillermo Jorge
Química
Preferential oxidation
Hydrogen purification
Ptsn/y-AI2O3
title_short Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
title_full Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
title_fullStr Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
title_full_unstemmed Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
title_sort Preferential oxidation of CO in presence of H2: behavior of PtSn/y-Al2O3 catalysts modified by K or Ba
dc.creator.none.fl_str_mv Siri, Guillermo Jorge
Bertolini, Guillermo Ramón
Ferretti, Osmar
author Siri, Guillermo Jorge
author_facet Siri, Guillermo Jorge
Bertolini, Guillermo Ramón
Ferretti, Osmar
author_role author
author2 Bertolini, Guillermo Ramón
Ferretti, Osmar
author2_role author
author
dc.subject.none.fl_str_mv Química
Preferential oxidation
Hydrogen purification
Ptsn/y-AI2O3
topic Química
Preferential oxidation
Hydrogen purification
Ptsn/y-AI2O3
dc.description.none.fl_txt_mv The behavior of catalysts based on Pt/y -Al2O3 is analyzed in the CO oxidation reaction. Experiments were performed in the temperature range between 50°C and 250°C with a feed H2 rich, and a concentration of 1% CO and 0.6% O2 Catalysts studied were: monometallic Pt/ y-Al2O3, bimetallic PtSn/ -Al2O3 with a ratio Sn/Pt=1.6 at/at and two catalysts prepared by modification of the last one with K or Ba. The catalyst that showed maximum activity and selectivity levels is the PtSnK/y -Al2O3. The tin addition increases the activity which allows the reaction to occur at lower temperatures due to the decrease in the CO-Pt interaction. The addition of K or Ba produces a subsequent improvement with respect to the CO oxidation temperature, which leads to a selectivity increase. The selectivity of the CO oxidation passes through a maximum value as a function of the temperature. This maximum is explained by the importance acquired by the reverse of water gas shift reaction at temperatures near 200ºC
Centro de Investigación y Desarrollo en Ciencias Aplicadas
description The behavior of catalysts based on Pt/y -Al2O3 is analyzed in the CO oxidation reaction. Experiments were performed in the temperature range between 50°C and 250°C with a feed H2 rich, and a concentration of 1% CO and 0.6% O2 Catalysts studied were: monometallic Pt/ y-Al2O3, bimetallic PtSn/ -Al2O3 with a ratio Sn/Pt=1.6 at/at and two catalysts prepared by modification of the last one with K or Ba. The catalyst that showed maximum activity and selectivity levels is the PtSnK/y -Al2O3. The tin addition increases the activity which allows the reaction to occur at lower temperatures due to the decrease in the CO-Pt interaction. The addition of K or Ba produces a subsequent improvement with respect to the CO oxidation temperature, which leads to a selectivity increase. The selectivity of the CO oxidation passes through a maximum value as a function of the temperature. This maximum is explained by the importance acquired by the reverse of water gas shift reaction at temperatures near 200ºC
publishDate 2007
dc.date.none.fl_str_mv 2007-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/99917
url http://sedici.unlp.edu.ar/handle/10915/99917
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/16655
info:eu-repo/semantics/altIdentifier/url/http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-07932007000400008&lng=es&nrm=iso&tlng=en
info:eu-repo/semantics/altIdentifier/issn/1851-8796
info:eu-repo/semantics/altIdentifier/hdl/11336/16655
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
275-281
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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