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Metal Micro-Monoliths for the Kinetic Study and the Intensification of the Water Gas Shift Reaction

 

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dc.creator García Moncada, Nuria es
dc.creator Groppi, Gianpiero es
dc.creator Beretta, Alessandra es
dc.creator Romero Sarria, Francisca es
dc.creator Odriozola Gordón, José Antonio es
dc.date.accessioned 2019-02-21T10:01:12Z
dc.date.available 2019-02-21T10:01:12Z
dc.date.issued 2018-11
dc.identifier.citation García Moncada, N., Groppi, G., Beretta, A., Romero Sarria, F. y Odriozola Gordón, J.A. (2018). Metal Micro-Monoliths for the Kinetic Study and the Intensification of the Water Gas Shift Reaction. Catalysts, 8 (12), 594.
dc.identifier.issn 2073-4344 es
dc.identifier.uri https://hdl.handle.net/11441/83323
dc.description.abstract A kinetic study of the water gas shift (WGS) reaction has been carried out on a Pt-based catalyst promoted by a Zr-based proton conductor. The investigation was first performed on powders with diluted feed mixtures and then extended to more severe and representative conditions by using a catalyst coated metallic micromonolith. Temperature measurements reveal that isothermal conditions were obtained along the micromonolith during the tested conditions. In addition, the very thin catalytic layer allows for the discarding of intraporous resistances, providing excellent conditions to analyse the kinetics of the WGS reaction under the integral regime. The proposed rate expression accounts for independence on CO concentration, an inhibiting effect of H2 and a promoting effect of H2O; kinetic orders on CO and H2 are in line with those reported in the literature for the Pt-based catalyst. Instead, the obtained reaction order of water (0.36) is significantly lower than that reported for unpromoted catalysts (typically 0.77–1.10) in good agreement with the proposed water-enhancer effect of the proton conductor on the rate-limiting step. Metallic micromonoliths turn out to be a powerful tool for the kinetic investigation, due to the absence of mass and heat transport limitations and represent a strategy for the intensification of the WGS unit for future applications of fuel processors in small mobile devices. es
dc.format application/pdf es
dc.language.iso eng es
dc.publisher MDPI es
dc.relation.ispartof Catalysts, 8 (12), 594.
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.subject WGS es
dc.subject proton conductor es
dc.subject micromonolith es
dc.subject kinetics es
dc.subject Pt-based catalyst es
dc.subject isothermal microreactor es
dc.title Metal Micro-Monoliths for the Kinetic Study and the Intensification of the Water Gas Shift Reaction es
dc.type info:eu-repo/semantics/article es
dc.type.version info:eu-repo/semantics/publishedVersion es
dc.rights.accessrights info:eu-repo/semantics/openAccess es
dc.contributor.affiliation Universidad de Sevilla. Departamento de Química Inorgánica es
dc.relation.publisherversion https://doi.org/10.3390/catal8120594 es
dc.identifier.doi 10.3390/catal8120594 es
idus.format.extent 17 es
dc.journaltitle Catalysts es
dc.publication.volumen 8 es
dc.publication.issue 12 es
dc.publication.initialPage 594 es
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