Abstract
The reaction of CO(a) and O(a) on Pd(110) was studied with LEED and angle-resolved thermal desorption. Heating the coadlayer produces five peaks in the CO2 formation in the range of 160 to 460 K. The angular distribution of each is different. The distribution becomes sharper as the density of the coadlayer is increased, and it shows the dependence on the crystal azimuth. The correlation between the anisotropic angular distribution and the structure around the reaction site is discussed.