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dc.contributor.authorKulkarni, G U-
dc.contributor.authorRao, C N R-
dc.date.accessioned2012-03-14T05:47:30Z-
dc.date.available2012-03-14T05:47:30Z-
dc.date.issued2003-04-
dc.identifier1022-5528en_US
dc.identifier.citationTopics in Catalysis 22(3-4), 183-189 (2003)en_US
dc.identifier.urihttp://hdl.handle.net/10572/600-
dc.descriptionRestricted Accessen_US
dc.description.abstractSeveral investigations have been carried out on Cu/ZnO catalysts by employing extended X-ray absorption. ne structure (EXAFS) and X-ray photoelectron spectroscopy (XPS). EXAFS investigations of Cu/ZnO catalysts subjected to hydrogen reduction show the presence of Cu1+ species and Cu microclusters. The proportion of Cu1+ depends on the rate of increase of the reduction temperature and on the amount of alumina added. An XPS study of the interaction of CO with model Cu/ZnO catalysts prepared in situ in the electron spectrometer shows the formation of CO2-, CO32- and C2O42- species, their proportion relative to CO increasing with the Cu1+ Cu-0 ratio. A study of the interaction of CH3OH with Cu clusters deposited on ZnO films reveals reversible molecular adsorption and the formation of CH3O on clean Cu clusters. If the Cu clusters are pretreated with oxygen, however, both CH3O and HCOO- species are produced. Model Cu/ZnO catalyst surfaces containing both Cu1+ and Cu-0 species show interesting oxidation properties. On a Cu-0-rich catalyst surface, only the CH3O species is formed on interaction with CH3OH. On a Cu1+-rich surface, the HCOO- ion is the predominant species.en_US
dc.description.urihttp://dx.doi.org/10.1023/A:1023511601464en_US
dc.language.isoenen_US
dc.publisherKluwer Academic/Plenum Publishingen_US
dc.rights© 2003 Plenum Publishing Corporationen_US
dc.subjectCu/ZnO catalysten_US
dc.subjectmethanolen_US
dc.subjectcarbon monoxideen_US
dc.subjectadsorptionen_US
dc.subjectEXAFSen_US
dc.subjectXPSen_US
dc.subjectCarbon-Dioxideen_US
dc.subjectIn-Situen_US
dc.subjectOxidationen_US
dc.subjectSurfacesen_US
dc.subjectCu(110)en_US
dc.subjectCopperen_US
dc.subjectSpectroscopyen_US
dc.subjectAdsorptionen_US
dc.subjectMetalen_US
dc.titleEXAFS and XPS investigations of Cu/ZnO catalysts and their interaction with CO and methanolen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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