| Autor: |
Lennard Wharton, Charles A. Becker, Daniel H. Winicur, Jerry E. Hurst |
| Rok vydání: |
1981 |
| Předmět: |
|
| Zdroj: |
Surface Science. 109:263-275 |
| ISSN: |
0039-6028 |
| DOI: |
10.1016/0039-6028(81)90523-9 |
| Popis: |
The kinetics of the desorption of CO from a Pt(111) crystal between 419 and 505 K is reported using a Low-Energy Molecular-Beam-Scattering (LEMS) technique with a helium probe beam and a CO dosing beam. The resulting first-order Arrhenius rate constant is k = 2.7 × 10 13 exp(−31.1 kcal mole · RT) s −1 . We also report a study of the equilibriumadsorbed CO between 400 and 600 K using LEMS. These results, fitted to a Temkin isotherm model, indicate that the adsorption energy decreases linearly with surface coverage with the average value equal to 31.1 + 1.2 kcal mole over the coverage range 0 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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