The adsorption of ethene on Fe(1Â 1Â 1) and surface carbide formation

- Ethene dehydrogenates on Fe(1 1 1) with high reaction probability.
- Above ∼600 K this occurs at steady state, with carbon diffusion into the sub-surface region.
- This leaves fee sites for ethane dissociation/dehydrogenation.
- The carbon is present as a carbide.
- Carbon is removed by oxygen as CO above 600 K.