Lead deposition onto a polycrystalline platinum surface: I. Study by Auger electron spectroscopy and line of sight mass spectroscopy |
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| Authors: | G. Praline N. Pacia J.J. Ehrhardt A. Cassuto J.P. Langeron |
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| Affiliation: | Larigs, Laboratoire Maurice Letort, CNRS, B.P. 104, F-54600 Villers les Nancy, France;Centre d''Etudes de Chimie Métallurgique, 15, rue Georges Urbain, F-94400 Vitry sur Scine, France |
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| Abstract: | Progressive lead deposition onto a platinum substrate at 300 K (as analysed by Auger electron spectroscopy and thermal desorption) corresponds to a two-stage mechanism. The most probable explanation is an adsorption of lead atoms in the first “layer” (almost covering the surface), followed by a lead-rich platinum alloy formation. These two types of surface present different catalytic properties, as it will be shown in following papers. |
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