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Annihilation reaction of diffusing particles on heterogeneous surfaces

โœ Scribed by A.P. Gonzalez; V.D. Pereyra; J.L. Riccardo; G. Zgrablich

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
326 KB
Volume
6
Category
Article
ISSN
0960-0779

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โœฆ Synopsis

The kinetics of the A + A ~ 0 reaction on a correlated heterogeneous surface is studied. As a novel result it is found that the temporal behaviour of the density of A particles depends on the energetic topography of the surface when A particles are initially located preferently on the more energetic sites, as it happens in the case of thermodynamical equilibrium for the adsorbate.

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Ozone, 03, reacts with a carbon sample at room temperature. Clean carbon samples show a half to one and a half order of magnitude increased initial rate constant (k,) for O3 loss relative to repetitively exposed carbon samples. The ozone loss rate and therefore the rate constant reaches steady state