| Abstract: | Investigations on Metal Catalysts. XIV. Physico-chemical and Catalytical Properties of Palladium-Rhenium Catalysts Characterization of carrier-free Pd? Re catalysts with regard to their phase structure, dispersity and catalytical activity were performed by X-ray measurements, sorption methods (adsorption of N2, chemisorption of CO, sorption of H2), and catalytical investigations (dehydrogenation of cyclohexane, hydrogenation of benzene). The dispersity of the catalysts is influenced by thenium to a remarkable extent. There are references, that the composition of the bulk phase and the surface layer of the crystallites differs from each other. Also a synergistic effect in catalytical activity is caused by rhenium. The similarities between Pd? Re and Pt? Re catalysts are discussed briefly. |
