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The active sites for catalytic reactions in heterogeneous catalysis are often minority sites related to defects at the surface. However, in most studies performed so far under controlled conditions, nearly perfect low Miller index surfaces were used, giving rise to the so-called structure gap in the surface science approach to catalysis. In order to overcome these limits and understand how defects...
The relevant parameters which characterise molecular desorption of O 2 -Ag(001) have been determined under isothermal conditions in the low coverage limit, using the beam-flag method. We find a desorption order n = 1.07 ± 0.10, a desorption energy E des = 0.50 ± 0.12 eV and a pre-exponential factor v des = 10 13.3± ...
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