Transient Experiments on CO2 Formation by the CO Oxidation Reaction over 
Oxygen-Rich Ru(0001) Surfaces

Böttcher, A.; Rogozia, M.; Niehus, H.; Over, Herbert; Ertl, Gerhard

doi:10.1021/jp990503v

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Transient Experiments on CO₂ Formation by the CO Oxidation Reaction over Oxygen-Rich Ru(0001) Surfaces

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Over, Herbert
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl, Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Böttcher, A., Rogozia, M., Niehus, H., Over, H., & Ertl, G. (1999). Transient Experiments on CO₂ Formation by the CO Oxidation Reaction over Oxygen-Rich Ru(0001) Surfaces. The Journal of Physical Chemistry B, 103(30), 6267-6271. doi:10.1021/jp990503v.

Cite as: https://hdl.handle.net/21.11116/0000-0008-C917-C

Abstract

Reactive scattering of CO molecules at oxygen-rich Ru(0001) surfaces with concentrations equivalent up to 16 monolayers and sample temperatures between 300 and 700 K led to the identification of two distinct reaction channels in the transient CO₂ rate. The first reaction channel is related to the recombination of CO molecules with oxygen atoms already located on the surface. The second reaction channel, which can be observed at sample temperatures above about 400 K, is controlled by the diffusion of oxygen atoms from the near-surface region toward the surface.