dc.creatorFornero, Esteban Luis
dc.creatorChiavassa, Dante Luis
dc.creatorBonivardi, Adrian Lionel
dc.creatorBaltanas, Miguel Angel
dc.date.accessioned2017-12-22T11:04:33Z
dc.date.accessioned2018-11-06T16:17:41Z
dc.date.available2017-12-22T11:04:33Z
dc.date.available2018-11-06T16:17:41Z
dc.date.created2017-12-22T11:04:33Z
dc.date.issued2017-12
dc.identifierBaltanas, Miguel Angel; Bonivardi, Adrian Lionel; Chiavassa, Dante Luis; Fornero, Esteban Luis; Transient analysis of the reverse water gas shift reaction on Cu/ZrO2 and Ga2O3/Cu/ZrO2 catalysts; Elsevier; Journal of CO2 Utilization; 22; 12-2017; 289-298
dc.identifier2212-9820
dc.identifierhttp://hdl.handle.net/11336/31346
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1906663
dc.description.abstractThe performance of two copper-based catalysts, Cu/ZrO2 and Ga2O3/Cu/ZrO2, in regards the reverse water gas shift (RWGS) reaction as compared with their reaction rates for the methanol synthesis reaction (RCH3OH) was studied using H2/CO2 mixtures at 1.6 and 0.1 MPa, at 498 K. The reactivity studies were carried out using a Carberry-type microcatalytic reactor operated in the batch (transient) mode after H2 prereduction at 523 K (2 h). Measurements of the catalytic activity were also made using D2/CO2 mixtures (0.1 MPa, 498 K) to assess isotope effects. For Cu/ZrO2, the initial RWGS reaction rate using D2 instead of H2 was slightly higher whereas such rate was about equal for the ternary catalyst. Kinetic rate expressions obtained from the Langmuir-Hinshelwood-Hougen-Watson formalism were used to model and analyze the experimental results and the reaction mechanism(s) of the RWGS on these catalysts. Congruence was found between the experimental results and a reaction mechanism where (predominantly) CO2 adsorbs dissociatively on the Cu particles (rate-determining step). The reduction of (ad)oxygen and surface hydroxyls follow afterwards.
dc.languageeng
dc.publisherElsevier
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jcou.2017.06.002
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectASSOCIATIVE MECHANISMS
dc.subjectCO2 HYDROGENATION
dc.subjectMETHANOL SYNTHESIS
dc.subjectREDOX MECHANISM
dc.subjectSUPPORTED COPPER
dc.subjectWATER GAS SHIFT
dc.titleTransient analysis of the reverse water gas shift reaction on Cu/ZrO2 and Ga2O3/Cu/ZrO2 catalysts
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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