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

dc.contributorUniversidad EAFIT. Departamento de Ingeniería de Procesos
dc.contributorProcesos Ambientales (GIPAB)
dc.creatorGómez-García, M.-A.
dc.creatorGómez Mendoza, N.A.
dc.creatorDobrosz-Gómez, I.
dc.creatorGilpavas, E.
dc.creatorRynkowski, J.
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.created2021-04-16T20:27:36Z
dc.date.issued2015-12-15
dc.identifier13858947
dc.identifier18733212
dc.identifierWOS;000362860100004
dc.identifierSCOPUS;2-s2.0-84947869864
dc.identifierhttp://hdl.handle.net/10784/29370
dc.identifier10.1016/j.cej.2015.03.015
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.
dc.languageeng
dc.publisherELSEVIER SCIENCE SA
dc.relationhttps://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 studies
dc.subjectTemperature-Scanning Method
dc.subjectGold catalyst
dc.subjectCeria-zirconia mixed oxide
dc.subjectCO oxidation
dc.subjectCatalyst composition optimization
dc.titleTemperature-Scanning Method for the kinetic studies of CO oxidation over ceria-zirconia supported gold catalysts
dc.typeinfo:eu-repo/semantics/article
dc.typearticle
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typepublishedVersion


Este ítem pertenece a la siguiente institución