Site-selective ethanol conversion over supported copper catalysts

dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:18:25Z
dc.date.available2014-05-20T14:18:25Z
dc.date.created2014-05-20T14:18:25Z
dc.date.issued2012-09-05
dc.identifierCatalysis Communications. Amsterdam: Elsevier B.V., v. 26, p. 122-126, 2012.
dc.identifier1566-7367
dc.identifierhttp://hdl.handle.net/11449/25547
dc.identifier10.1016/j.catcom.2012.05.008
dc.identifierWOS:000308285100025
dc.identifier2354739980406725
dc.identifier0000-0001-9315-9392
dc.description.abstractThe origin and influence of active sites on supported copper catalysts, and their catalytic properties for ethanol conversion, were investigated using Cu/SiO2, Cu2O/SiO2, and Cu/ZrO2. Diffuse reflectance infrared Fourier transform spectroscopy of adsorbed CO revealed that Cu1+ was more prevalent than Cu-0 species at the Cu/SiO2 surface, and that Cu-0 was the main species on Cu/ZrO2. The Cu1+/Cu-0 pair provided by Cu/SiO2 generates sites that are highly selective for the dehydrogenation of ethanol. Ethyl acetate can be formed from ethanol and acetaldehyde at ZrO2 or Cu surfaces. A combination of the Cu1+/Cu-0 pair and Cu-0 interfaced to ZrO2 is needed to efficiently transform ethanol to ethyl acetate. (C) 2012 Elsevier B.V. All rights reserved.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationCatalysis Communications
dc.relation3.463
dc.relation0,929
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDRIFTS
dc.subjectXANES
dc.subjectZirconia polymorphs
dc.subjectHydrogen
dc.subjectCopper catalysts
dc.subjectEthanol chemistry
dc.titleSite-selective ethanol conversion over supported copper catalysts
dc.typeArtículos de revistas


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