The surface reconstruction described in terms of the second-order phase transition theory, was shown to result in a decrease in the apparent pre-exponential factor for desorption in comparison with the value predicted on the basis of the standard transition state theory provided that adsorbed particles suppressed the phase transition. If adsorbed particles facilitated the phase transition, the reconstruction led to an increase in the pre-exponential factor. The effect could be strong (of the order of 10±4). The pre-exponential factors for CO desorption from the Ni(111), Ru(001) and Ir(110) surfaces were compared. The low value of the desorption pre-exponential factor for the latter surface was explained by the surface reconstruction.
The Effect of Adsorbate-Induced Surface Reconstruction on the Apparent Arrhenius Parameters for Desorption. V.P.Zhdanov: Surface Science Letters, 1989, 219, L571-5