A million-channel CO-PrOx microreactor on a fingertip for fuel cell application

Autores
Divins, N. J.; Lopez, Eduardo; Roig, M.; Trifonov, T.; Rodríguez, A.; González De Rivera, F.; Rodríguez, L. I.; Seco, M.; Rossell, O.; Llorca, J.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A silicon micromonolith containing ca. 40000 regular channels of 3.3μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) in the presence of hydrogen. The functionalization of the silicon microchannels has been accomplished by growing a SiO2 layer on the channel walls, followed by exchange with a titanium alkoxyde precursor and decomposition into TiO2 and, finally, by anchoring carbosilanethiol dendron protected pre-formed Au nanoparticles. Catalytically active centers at the Au-TiO2 interface have been obtained by thermal activation. With this method, an excellent homogeneity and adherence of the catalytic layer over the microchannels of the silicon micromonolith has been obtained, resulting in geometric exposed surface area values of about 4×105m2/m3. The functionalized silicon micromonolith has been tested for CO-PrOx at 363-433K and λ=2 under H2/CO=0-20 (molar), and the results have been compared with those obtained over a conventional cordierite monolith with 400cpsi loaded with the same catalyst. The performance of the silicon micromonolith, which converts ca. 1NmL of CO per minute and mL of microreactor at 398K under H2/CO ∼20, is two orders of magnitude higher than that of conventional monolithic structures, suggesting that silicon micromonoliths could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications. © 2010 Elsevier B.V.
Fil: Divins, N. J.. Universidad Politécnica de Catalunya; España
Fil: Lopez, Eduardo. Universidad Politécnica de Catalunya; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Roig, M.. Universidad Politécnica de Catalunya; España
Fil: Trifonov, T.. Universidad Politécnica de Catalunya; España
Fil: Rodríguez, A.. Universidad Politécnica de Catalunya; España
Fil: González De Rivera, F.. Universidad de Barcelona; España
Fil: Rodríguez, L. I.. Universidad de Barcelona; España
Fil: Seco, M.. Universidad de Barcelona; España
Fil: Rossell, O.. Universidad de Barcelona; España
Fil: Llorca, J.. Universidad Politécnica de Catalunya; España
Materia
Co-Prox
Gold Catalyst
Hydrogen Purification
Macroporous Silicon
Microreactor
Pemfc
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:11336/57676
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/57676
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A million-channel CO-PrOx microreactor on a fingertip for fuel cell applicationDivins, N. J.Lopez, EduardoRoig, M.Trifonov, T.Rodríguez, A.González De Rivera, F.Rodríguez, L. I.Seco, M.Rossell, O.Llorca, J.Co-ProxGold CatalystHydrogen PurificationMacroporous SiliconMicroreactorPemfchttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2A silicon micromonolith containing ca. 40000 regular channels of 3.3μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) in the presence of hydrogen. The functionalization of the silicon microchannels has been accomplished by growing a SiO2 layer on the channel walls, followed by exchange with a titanium alkoxyde precursor and decomposition into TiO2 and, finally, by anchoring carbosilanethiol dendron protected pre-formed Au nanoparticles. Catalytically active centers at the Au-TiO2 interface have been obtained by thermal activation. With this method, an excellent homogeneity and adherence of the catalytic layer over the microchannels of the silicon micromonolith has been obtained, resulting in geometric exposed surface area values of about 4×105m2/m3. The functionalized silicon micromonolith has been tested for CO-PrOx at 363-433K and λ=2 under H2/CO=0-20 (molar), and the results have been compared with those obtained over a conventional cordierite monolith with 400cpsi loaded with the same catalyst. The performance of the silicon micromonolith, which converts ca. 1NmL of CO per minute and mL of microreactor at 398K under H2/CO ∼20, is two orders of magnitude higher than that of conventional monolithic structures, suggesting that silicon micromonoliths could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications. © 2010 Elsevier B.V.Fil: Divins, N. J.. Universidad Politécnica de Catalunya; EspañaFil: Lopez, Eduardo. Universidad Politécnica de Catalunya; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Roig, M.. Universidad Politécnica de Catalunya; EspañaFil: Trifonov, T.. Universidad Politécnica de Catalunya; EspañaFil: Rodríguez, A.. Universidad Politécnica de Catalunya; EspañaFil: González De Rivera, F.. Universidad de Barcelona; EspañaFil: Rodríguez, L. I.. Universidad de Barcelona; EspañaFil: Seco, M.. Universidad de Barcelona; EspañaFil: Rossell, O.. Universidad de Barcelona; EspañaFil: Llorca, J.. Universidad Politécnica de Catalunya; EspañaElsevier Science Sa2011-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57676Divins, N. J.; Lopez, Eduardo; Roig, M.; Trifonov, T.; Rodríguez, A.; et al.; A million-channel CO-PrOx microreactor on a fingertip for fuel cell application; Elsevier Science Sa; Chemical Engineering Journal; 167; 2-3; 3-2011; 597-6021385-8947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cej.2010.07.072info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894710009812info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:58:46Zoai:ri.conicet.gov.ar:11336/57676instacron: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:34982025-10-15 14:58:46.649CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
title A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
spellingShingle A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
Divins, N. J.
Co-Prox
Gold Catalyst
Hydrogen Purification
Macroporous Silicon
Microreactor
Pemfc
title_short A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
title_full A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
title_fullStr A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
title_full_unstemmed A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
title_sort A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
dc.creator.none.fl_str_mv Divins, N. J.
Lopez, Eduardo
Roig, M.
Trifonov, T.
Rodríguez, A.
González De Rivera, F.
Rodríguez, L. I.
Seco, M.
Rossell, O.
Llorca, J.
author Divins, N. J.
author_facet Divins, N. J.
Lopez, Eduardo
Roig, M.
Trifonov, T.
Rodríguez, A.
González De Rivera, F.
Rodríguez, L. I.
Seco, M.
Rossell, O.
Llorca, J.
author_role author
author2 Lopez, Eduardo
Roig, M.
Trifonov, T.
Rodríguez, A.
González De Rivera, F.
Rodríguez, L. I.
Seco, M.
Rossell, O.
Llorca, J.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Co-Prox
Gold Catalyst
Hydrogen Purification
Macroporous Silicon
Microreactor
Pemfc
topic Co-Prox
Gold Catalyst
Hydrogen Purification
Macroporous Silicon
Microreactor
Pemfc
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv A silicon micromonolith containing ca. 40000 regular channels of 3.3μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) in the presence of hydrogen. The functionalization of the silicon microchannels has been accomplished by growing a SiO2 layer on the channel walls, followed by exchange with a titanium alkoxyde precursor and decomposition into TiO2 and, finally, by anchoring carbosilanethiol dendron protected pre-formed Au nanoparticles. Catalytically active centers at the Au-TiO2 interface have been obtained by thermal activation. With this method, an excellent homogeneity and adherence of the catalytic layer over the microchannels of the silicon micromonolith has been obtained, resulting in geometric exposed surface area values of about 4×105m2/m3. The functionalized silicon micromonolith has been tested for CO-PrOx at 363-433K and λ=2 under H2/CO=0-20 (molar), and the results have been compared with those obtained over a conventional cordierite monolith with 400cpsi loaded with the same catalyst. The performance of the silicon micromonolith, which converts ca. 1NmL of CO per minute and mL of microreactor at 398K under H2/CO ∼20, is two orders of magnitude higher than that of conventional monolithic structures, suggesting that silicon micromonoliths could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications. © 2010 Elsevier B.V.
Fil: Divins, N. J.. Universidad Politécnica de Catalunya; España
Fil: Lopez, Eduardo. Universidad Politécnica de Catalunya; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Roig, M.. Universidad Politécnica de Catalunya; España
Fil: Trifonov, T.. Universidad Politécnica de Catalunya; España
Fil: Rodríguez, A.. Universidad Politécnica de Catalunya; España
Fil: González De Rivera, F.. Universidad de Barcelona; España
Fil: Rodríguez, L. I.. Universidad de Barcelona; España
Fil: Seco, M.. Universidad de Barcelona; España
Fil: Rossell, O.. Universidad de Barcelona; España
Fil: Llorca, J.. Universidad Politécnica de Catalunya; España
description A silicon micromonolith containing ca. 40000 regular channels of 3.3μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) in the presence of hydrogen. The functionalization of the silicon microchannels has been accomplished by growing a SiO2 layer on the channel walls, followed by exchange with a titanium alkoxyde precursor and decomposition into TiO2 and, finally, by anchoring carbosilanethiol dendron protected pre-formed Au nanoparticles. Catalytically active centers at the Au-TiO2 interface have been obtained by thermal activation. With this method, an excellent homogeneity and adherence of the catalytic layer over the microchannels of the silicon micromonolith has been obtained, resulting in geometric exposed surface area values of about 4×105m2/m3. The functionalized silicon micromonolith has been tested for CO-PrOx at 363-433K and λ=2 under H2/CO=0-20 (molar), and the results have been compared with those obtained over a conventional cordierite monolith with 400cpsi loaded with the same catalyst. The performance of the silicon micromonolith, which converts ca. 1NmL of CO per minute and mL of microreactor at 398K under H2/CO ∼20, is two orders of magnitude higher than that of conventional monolithic structures, suggesting that silicon micromonoliths could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications. © 2010 Elsevier B.V.
publishDate 2011
dc.date.none.fl_str_mv 2011-03
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/11336/57676
Divins, N. J.; Lopez, Eduardo; Roig, M.; Trifonov, T.; Rodríguez, A.; et al.; A million-channel CO-PrOx microreactor on a fingertip for fuel cell application; Elsevier Science Sa; Chemical Engineering Journal; 167; 2-3; 3-2011; 597-602
1385-8947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/57676
identifier_str_mv Divins, N. J.; Lopez, Eduardo; Roig, M.; Trifonov, T.; Rodríguez, A.; et al.; A million-channel CO-PrOx microreactor on a fingertip for fuel cell application; Elsevier Science Sa; Chemical Engineering Journal; 167; 2-3; 3-2011; 597-602
1385-8947
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.cej.2010.07.072
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894710009812
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 Sa
publisher.none.fl_str_mv Elsevier Science Sa
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 13.22299

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