Journal of Chemical Physics, Vol.104, No.21, 8825-8828, 1996
Kinetic Evidence for the Dependence of Surface-Reaction Rates on the Distribution of Reactants on the Surface
Two kinetically distinct types of oxygen atoms can be identified during the isothermal oxidation of CO on Pt(111) even though they all sit in identical sites at the start of the reaction. This is explained by a lowering in the reaction activation barrier with oxygen islanding.
Keywords:CARBON-MONOXIDE OXIDATION;PT(111) SURFACE;CATALYTIC-OXIDATION;MOLECULAR-BEAM;CO;ADSORPTION;OXYGEN