CO2 Product Velocity Distribution for CO Oxidation on Platinum.
CHICAGO UNIV ILL
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It has been inferred from the very peaked angular distribution of the CO2 formed by catalytic oxidation of CO on Pt111 that the product CO2 is desorbed with excess translational kinetic energy. The first direct measurement of the CO2 velocity distributions and angular distributions for this reaction on polycrystalline Pt are reported. These qualitatively confirm the inference and give quantitative information. For CO2 desorbing in the normal direction the most probable velocity was 116000 cmsec, implying a kinetic energy of Ek 3560 K. At larger angles from the surface normal the most probable velocity decreases monotonically. At 45 degrees it is 90000 cmsec for a kinetic energy of Ek - 2140 degrees. Author
- Physical Chemistry