Chemistry Letters · 1998 · 15 citations · 12 references
Natural SciencesChemistryMaterials ScienceCatalysisInorganic ChemistrySurface ScienceCatalyst CharacterizationCatalyst SynthesisCatalytic MaterialsCatalytic MechanismsCatalytic Reaction EngineeringCatalytic Reaction KineticsDissociative AdsorptionInfrared Spectroscopic AnalysisIsotopic Exchange ProcessesMethaneMethane FormationMethane OxidationSelectivityTemperature-programmed Reduction
Abstract Selectivity of CO-H2 reaction over Pd/CeO2 changed drastically from methanol to methane by higher temperature reduction (SMSI effect). Facile isotopic exchange reaction of 12C18O-13C16O indicated the dissociative adsorption of CO over reduced Pd/CeO2, which corresponds to the acceleration of methane formation. Infrared spectroscopic investigation during the reaction suggested that methanol formation sites were formed by the transformation of methane formation sites.
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