Temperature-Scanning Method for the kinetic studies of CO oxidation over ceria-zirconia supported gold catalysts

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dc.citation.journalTitleCHEMICAL ENGINEERING JOURNAL
dc.contributor.authorGómez-García, M.-A.
dc.contributor.authorGómez Mendoza, N.A.
dc.contributor.authorDobrosz-Gómez, I.
dc.contributor.authorGilpavas, E.
dc.contributor.authorRynkowski, J.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Procesosspa
dc.contributor.researchgroupProcesos Ambientales (GIPAB)spa
dc.creatorGómez-García, M.-A.
dc.creatorGómez Mendoza, N.A.
dc.creatorDobrosz-Gómez, I.
dc.creatorGilpavas, E.
dc.creatorRynkowski, J.
dc.date.accessioned2021-04-16T20:27:36Z
dc.date.available2021-04-16T20:27:36Z
dc.date.issued2015-12-15
dc.description.abstractThe experimental data of CO oxidation over the series of 2 wt.% Au/Ce1-xZrxO2 (x=0, 0.25, 0.5, 0.75, 1) catalyst were analyzed using a variation of the Temperature Scanning Method with the aim of catalyst's composition optimization. The catalysts were prepared by the Direct Anionic Exchange technique. The kinetic of CO oxidation was quantified by conversion-rate-temperature (X, r, T) triplets, calculated from raw data obtained using a plug flow reactor, working at oxygen stoichiometric, rich, and lean conditions. The data were fitted to the Mars-van Krevelen adsorption-reaction model (MvK). The results showed that the MvK model is able to predict the superficial reaction and the re-oxidation of the catalyst surface. Additionally, the data at oxygen lean conditions revealed the distinctive characteristic of Ce-containing catalysts, which act as oxygen buffer by releasing-uptalcing oxygen. The obtained values of the fitted parameters allowed re-mapping raw data onto the conversion-temperature-catalyst composition surface plot and their application as a tool for the optimization of catalyst composition. (C) 2015 Elsevier B.V. All rights reserved.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1686
dc.identifier.doi10.1016/j.cej.2015.03.015
dc.identifier.issn13858947
dc.identifier.issn18733212
dc.identifier.otherWOS;000362860100004
dc.identifier.otherSCOPUS;2-s2.0-84947869864
dc.identifier.urihttp://hdl.handle.net/10784/29370
dc.language.isoeng
dc.publisherELSEVIER SCIENCE SA
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84947869864&doi=10.1016%2fj.cej.2015.03.015&partnerID=40&md5=83707b5d89d5c72f809a9fd6e1dff57c
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1385-8947
dc.sourceCHEMICAL ENGINEERING JOURNAL
dc.subjectKinetic studieseng
dc.subjectTemperature-Scanning Methodeng
dc.subjectGold catalysteng
dc.subjectCeria-zirconia mixed oxideeng
dc.subjectCO oxidationeng
dc.subjectCatalyst composition optimizationeng
dc.titleTemperature-Scanning Method for the kinetic studies of CO oxidation over ceria-zirconia supported gold catalystseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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