Abstract
Palladium-silver alloys have been prepared by chemical reduction at 353 K and by equilibration in hydrogen at 673 K. They have then been investigated by Auger spectroscopy. The equation derived by Gallon has been used for the determination of the “monolayer intensity” and for the evaluation of data on the surface composition of alloys. The surface composition measured experimentally has been compared with the theoretical predictions. It appears that in compliance with the latter, the surface of equilibrated alloys is strongly enriched in silver. This silver enrichment is of the same order of magnitude as indicated earlier by other methods. The implications of this surface enrichment for chemisorption and catalysis are discussed.
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