A thermal He scattering study of CO adsorption on Pt(111)
作者： Bene Poelsema , Robert L. Palmer , George Comsa
DOI: 10.1016/0167-2584(84)90406-7
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摘要: Abstract CO adsorption on Pt(111) is investigated by means of thermal He scattering. The relation between the relative height specular peak and coverage (θ = n Pt ) approximated well an exponential at low coverages I 0 exp(−18.5θ) for 63 meV atoms incident 40°. This relationship used to monitor throughout this paper. activation energy desorption has been found decrease linearly with increasing up θ ≈ 0.13, i.e. E d − ϵθ , where do 133 kJ/mol ϵ 68.5 kj/mol. preexponential factor about 1.4 × 10 14 s −1 T 400 K. set three parameters allows a fully consistent description adsorption, equilibrium measurements.
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