THERMAL DESORPTION OF CARBON MONOXIDE FROM COPPER,
Abstract
The thermal desorption of carbon monoxide adsorbed on copper has been studied. After ion bombardment cleaning, two thermal desorption peaks were observed. They followed second order kinetics, and had activation energies of 14.7 and 16 Kcal/mole. The pre-exponential factors were 3 x 10 to the 11th power and 5 x 10 to the 7th power/second. After annealing, the high temperature peak was absent unless the sample was exposed to a much greater amount of carbon monoxide. There was very little shift in the position of the low temperature peak with initial coverage. This suggests that the apparent second order peak is made up of states with first order kinetics but with differing activation entropies for desorption. Samples cleaned by oxidation followed by reduction gave similar results except that a definite shift of the peak with initial coverage was observed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1968
- Accession Number
- AD0677568
Entities
People
- Alan W. Smith
Organizations
- Boeing