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6213753 
Journal Article 
Methane dissociative chemisorption on Pt(111) explored by microscopic reversibility 
Harrison, I; Ukraintsev, VA 
1993 
286 
3 
L571-L576 
Angle-resolved thermal programmed reaction was used to investigate the hydrogenation of methyl radicals on Pt(111). The angular distribution of desorbing methane produced at 240 K was strongly peaked towards the surface normal and the reaction displayed little kinetic isotope effect. When microscopic reversibility arguments are applied, these observations suggest that dissociative chemisorption of CH4 on an extensively H covered Pt(111) surface will display a sharply angle dependent sticking coefficient and little evidence for tunneling.