The kinetics of atomic carbon and oxygen buildup on a Ni(1OO) surface exposed to carbon monoxide at high temperatures have been investigated by Auger electron spectroscopy. The experimental data, taken at different sample temperatures (453 ≤ T ≤ 573 K) and at different CO partial pressures (3x10^-7 ≤ PCO ≤ 3x10^-6 mbar) allowed the identification of the CO dissociation mechanism. By fitting the experimental data with a set of rate equations describing CO dissociation, CO reduction of surface oxygen, and C and O recombination, we have been able to determine the pre-exponential factors and the activation energies of these processes.

Astaldi, C., Santoni, A., Della Valle, F., Rosei, R. (1989). CO dissociation and recombination reactions on Ni(100). SURFACE SCIENCE, 220(2-3), 322-332 [10.1016/0039-6028(89)90235-5].

CO dissociation and recombination reactions on Ni(100)

Della Valle, Federico;
1989-01-01

Abstract

The kinetics of atomic carbon and oxygen buildup on a Ni(1OO) surface exposed to carbon monoxide at high temperatures have been investigated by Auger electron spectroscopy. The experimental data, taken at different sample temperatures (453 ≤ T ≤ 573 K) and at different CO partial pressures (3x10^-7 ≤ PCO ≤ 3x10^-6 mbar) allowed the identification of the CO dissociation mechanism. By fitting the experimental data with a set of rate equations describing CO dissociation, CO reduction of surface oxygen, and C and O recombination, we have been able to determine the pre-exponential factors and the activation energies of these processes.
1989
Astaldi, C., Santoni, A., Della Valle, F., Rosei, R. (1989). CO dissociation and recombination reactions on Ni(100). SURFACE SCIENCE, 220(2-3), 322-332 [10.1016/0039-6028(89)90235-5].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1035067