No abstract

AbsWa~Oxygen spillover through the gas phase was investigated, using FTIR spectroscopy to measure the reaction kinetics of the oxidation of benzoic acid, adsorbed to y-alumina, in the absence and presence of a neighboring Pt grid. It could be shown that oxygen, activated on Pt may increase the oxidation rate, though there is no contact between Pt and the benzoic acid. 1,2,3]. This coke, often a mixture of graphite-like structures imbedded in higher hydrocarbons with the general formula CH, (0.5 < n < 1), must then be carefully removed by a lowtemperature oxid_mjon -the ,,coke burning" -in order to avoid permanent deactivation of the catalyst by recrystaUization of the metal component.