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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/57676
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T10:02:39Zoai: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:34982025-09-29 10:02:39.282CONICET 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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1844613833424896000 |
score |
13.070432 |