Sato, A. G.Volanti, D. P. [UNESP]Meira, D. M.Damyanova, S.Longo, Elson [UNESP]Bueno, J. M C2014-05-272014-05-272013-08-06Journal of Catalysis, v. 307, p. 1-17.0021-95171090-2694http://hdl.handle.net/11449/76224The effect of amorphous (am-), monoclinic (m-), and tetragonal (t-) ZrO2 phase on the physicochemical and catalytic properties of supported Cu catalysts for ethanol conversion was studied. The electronic parameters of Cu/ZrO2 were determined by in situ XAS, and the surface properties of Cu/ZrO2 were defined by XPS and DRIFTS of CO-adsorbed. The results demonstrated that the kind of ZrO2 phase plays a key role in the determination of structure and catalytic properties of Cu/ZrO 2 catalysts predetermined by the interface at Cu/ZrO2. The electron transfer between support and Cu surface, caused by the oxygen vacancies at m-ZrO2 and am-ZrO2, is responsible for the active sites for acetaldehyde and ethyl acetate formation. The highest selectivity to ethyl acetate for Cu/m-ZrO2 catalyst up to 513 K was caused by the optimal ratio of Cu0/Cu+ species and the high density of basic sites (O2-) associated with the oxygen mobility from the bulk m-ZrO2. © 2013 Elsevier Inc. All rights reserved.1-17engCharacterizationCu/ZrO2 catalystsEthanol dehydrogenationEthyl acetateCatalytic propertiesElectron transferElectronic parametersEthanol conversionEthyl acetatesOxygen mobilitySupported CuCatalyst selectivityEthanolZirconium alloysCatalyst supportsArtigo10.1016/j.jcat.2013.06.022WOS:000327903900001Acesso restrito2-s2.0-8488090700723547399804067250000-0001-9315-9392