M. Cacciatore et al., Eley-Rideal and Langmuir-Hinshelwood recombination coefficients for oxygenon silica surfaces, J THERMOPHY, 13(2), 1999, pp. 195-203
The energetics and dynamics of the Eley-Rideal (E-R) and Langmuir-Hinshelwo
od (L-A) recombination reaction of oxygen atoms on beta cristobalite have b
een studied within a semiclassical collisional model, The calculated recomb
ination coefficient gamma for the E-R reaction at T-s = 1000 K is in satisf
actory agreement with the experimental value, whereas at T-s = 600 K a sati
sfactory agreement is found between the L-H gamma value and the experimenta
l one. Results on the energy exchanges between the formed O-2 molecules and
the silica surface are reported. Site-specific effects as well as the infl
uence of the top layer surface structure are also pointed out and discussed
.