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dc.contributor.author Divins, N. J.
dc.contributor.author Lopez, Eduardo
dc.contributor.author Roig, M.
dc.contributor.author Trifonov, T.
dc.contributor.author Rodríguez, A.
dc.contributor.author González De Rivera, F.
dc.contributor.author Rodríguez, L. I.
dc.contributor.author Seco, M.
dc.contributor.author Rossell, O.
dc.contributor.author Llorca, J.
dc.date.available 2018-08-30T15:12:10Z
dc.date.issued 2011-03
dc.identifier.citation 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
dc.identifier.issn 1385-8947
dc.identifier.uri http://hdl.handle.net/11336/57676
dc.description.abstract 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.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier Science Sa
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject CO-PROX
dc.subject GOLD CATALYST
dc.subject HYDROGEN PURIFICATION
dc.subject MACROPOROUS SILICON
dc.subject MICROREACTOR
dc.subject PEMFC
dc.subject.classification Otras Ingeniería Química
dc.subject.classification Ingeniería Química
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.title A million-channel CO-PrOx microreactor on a fingertip for fuel cell application
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-07-11T13:59:52Z
dc.journal.volume 167
dc.journal.number 2-3
dc.journal.pagination 597-602
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Divins, N. J.. Universidad Politécnica de Catalunya; España
dc.description.fil 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
dc.description.fil Fil: Roig, M.. Universidad Politécnica de Catalunya; España
dc.description.fil Fil: Trifonov, T.. Universidad Politécnica de Catalunya; España
dc.description.fil Fil: Rodríguez, A.. Universidad Politécnica de Catalunya; España
dc.description.fil Fil: González De Rivera, F.. Universidad de Barcelona; España
dc.description.fil Fil: Rodríguez, L. I.. Universidad de Barcelona; España
dc.description.fil Fil: Seco, M.. Universidad de Barcelona; España
dc.description.fil Fil: Rossell, O.. Universidad de Barcelona; España
dc.description.fil Fil: Llorca, J.. Universidad Politécnica de Catalunya; España
dc.journal.title Chemical Engineering Journal
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.cej.2010.07.072
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385894710009812
dc.conicet.fuente individual


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)