Mathematical modelling of nitrogen desorption from an iridium surface: a study of the effects of surface structure and subsurface oxygenстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Thermal recombination of atomic nitrogen on iridium surfaces is studied by X-ray photoelectron spectroscopy and thermal desorption. Based on experimental data, new mathematical models are proposed and studied for nitrogen desorption from the surfaces of Ir(111), Ir(110), and iridium foil in the presence of adsorbed oxygen. The models take into account the specific features of the catalytic surface, the effect of oxygen, and the morphology of the adsorbed layer. The conditions for the appearance of an additional desorption maximum of N2are determined. Computational studies are carried out in the framework of point deterministic and stochastic models.