Palladium analytical electron

A metallic electrode consisting of a pure metal in contact with an analyte solution develops an electric potential in response to a redox reaction occurring at its metal surface. Common metal electrodes such as platinum, gold, palladium or carbon are known as inert metal electrodes whose sole function is to transfer electrons to or from species in solution. Metal electrodes corresponding to the first kind are pure metal electrodes such as Ag, Hg and others that respond directly to a change in activity of the metal cation in the solution. For example, for the reaction... 

Standard analytical procedures, including CO chemisorption, indicated that the new charge appeared to be o the same quality as previously used catalyst. Subsequently, electron probe scans led to the observation that the depth of palladium impregnation had changed. A comparison of typical palladium penetrations for the two charges is shown in Table IV and in Figures 1 and 2. 

The degradation of the catalytic activity with reaction time or thermal sintering was analytically studied by the determination of the specific surface area of the exposed palladium particles, by the chemical adsorption of carbon monoxide the distribution of palladium particles, by an electron microscope and the crystal imperfection, by X-ray diifraction analysis, and so on. 

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