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Macroporous silicon microreactor for the preferential oxidation of CO
dc.contributor.author | Divins, N.J. |
dc.contributor.author | López, E. |
dc.contributor.author | Llorca, J. |
dc.contributor.author | Vega, Didac |
dc.contributor.author | Rodríguez Martínez, Ángel |
dc.contributor.author | González de Rivera, F. |
dc.contributor.author | Angurell, I. |
dc.contributor.author | Seco, M. |
dc.contributor.author | Rossell, O. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.date.accessioned | 2013-09-12T17:06:33Z |
dc.date.created | 2013 |
dc.date.issued | 2013 |
dc.identifier.citation | Divins, N. [et al.]. Macroporous silicon microreactor for the preferential oxidation of CO. A: Spanish Conference on Electron Devices. "Proceedings of the 2013 Spanish Conference on Electron Devices: CDE 2013: February 12-14, 2013: Valladolid, Spain". Valladolid: Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 1-4. |
dc.identifier.isbn | 978-1-4673-4666-5 |
dc.identifier.uri | http://hdl.handle.net/2117/20128 |
dc.description.abstract | A macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 μm 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 macroporous silicon micromonolith has been obtained, which has been tested for CO-PrOx at 363-433 K and λ=2 under H2/CO=0-20 (molar). The macroporous silicon micromonolith converts ca. 3 NmL of CO per minute and mL of micro reactor at 433 K under H2/CO=20, suggesting that it could be particularly effective for hydrogen purification in low-temperature microfuel cells for portable applications. |
dc.format.extent | 4 p. |
dc.language.iso | eng |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Porous silicon |
dc.subject.lcsh | Hydrogen |
dc.subject.other | Carbon compounds |
dc.subject.other | Catalysts |
dc.subject.other | Elemental semiconductors |
dc.subject.other | Fuel cells |
dc.subject.other | Gold |
dc.subject.other | Microreactors |
dc.subject.other | Nanoparticles |
dc.subject.other | Oxidation |
dc.subject.other | Porous semiconductors |
dc.subject.other | Pyrolysis |
dc.subject.other | Silicon |
dc.subject.other | Titanium compounds |
dc.title | Macroporous silicon microreactor for the preferential oxidation of CO |
dc.type | Conference report |
dc.subject.lemac | Silici porós |
dc.subject.lemac | Hidrogen |
dc.contributor.group | Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies |
dc.identifier.doi | 10.1109/CDE.2013.6481362 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6481362 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 12736236 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Divins, N.; López, E.; Llorca, J.; Vega, D.; Rodriguez, A.; González de Rivera, F.; Angurell, I.; Seco, M.; Rossell, O. |
local.citation.contributor | Spanish Conference on Electron Devices |
local.citation.pubplace | Valladolid |
local.citation.publicationName | Proceedings of the 2013 Spanish Conference on Electron Devices: CDE 2013: February 12-14, 2013: Valladolid, Spain |
local.citation.startingPage | 1 |
local.citation.endingPage | 4 |