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Journal Article

Gas-phase coupling in the CO oxidation reaction on polycrystalline platinum

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Lauterbach,  Jochen
Fritz Haber Institute, Max Planck Society;

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Rotermund,  Harm-Hinrich
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Lauterbach, J., & Rotermund, H.-H. (1994). Gas-phase coupling in the CO oxidation reaction on polycrystalline platinum. Catalysis Letters, 27, 27-32. doi:10.1007/BF00806974.


Cite as: https://hdl.handle.net/21.11116/0000-0009-A21E-F
Abstract
We report on self-sustained rate oscillations during the catalytic CO oxidation reaction on polycrystalline platinum. The photoelectron emission microscope enabled us to distinguish between three different types of grains. We found that the (110)- and the (100)-type grains are responsible for the development of rate oscillations while the (111)-type grains remain in a steady state. Gas-phase coupling is the dominant mechanism leading to a synchronisation of the different oscillating grains over macroscopic distances.