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Adsorption of NO on a Rh‐10% Pt (111) surface: Non‐uniform spatial distribution
Author(s) -
Holloway P. H.,
Williams F. L.
Publication year - 1983
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740050404
Subject(s) - chemisorption , adsorption , surface (topology) , crystallite , absorption (acoustics) , single crystal , crystal (programming language) , materials science , chemical physics , crystallography , analytical chemistry (journal) , chemistry , geometry , mathematics , composite material , computer science , chromatography , programming language
Most studies of chemisorption now use single crystals in order to distinguish the effects of crystallite orientation upon absorption and to have a ‘large, uniform’ surface for measurement. Also, many of the analytical techniques require surface areas 1 mm in diameter for measurements. Most investigators implicitly assume that a single crystal will provide a uniform surface over these dimensions. This is not always true as will be shown in this case for NO absorption on Rh‐10% Pt (111) crystals. Therefore, the purpose of this communication is to show that high spatial resolution surface analysis can be very useful in studying surface/gas reactions, even on single crystal surfaces.