Molecular Beam Study of Oxygen and C2 Hydrocarbon Chemisorption and Reactions on Pt(111),
Abstract
The chemisorption and reactions of oxygen and the C2 hydrocarbons (acetylene, ethylene and ethane) on epitaxially grown Pt(111) crystals have been studied using modulated molecular beam techniques. The sticking coefficient of ethylene is observed to be about half that for acetylene which is near unity on oxygen covered Pt(111) in the temperature range 550-1000 K. For ethane, S < 0.05 under these same conditions. The results of this study suggest that the oxidation of the C2 hydrocarbons proceeds via a surface acetylenic species. The observance here of two distinct components in the angular desorption distribution of CO and CO2 is discussed in terms of finer details of the reaction mechanism.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 30, 1974
- Accession Number
- ADA004639
Entities
People
- Robert L. Palmer