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Reversible Bulk Oxidation of Ni Foil During Oscillatory Catalytic Oxidation of Propane: A Novel Type of Spatiotemporal Self-Organization

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Blume,  Raoul
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Teschner,  Detre
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Hävecker,  Michael
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Schlögl,  Robert
Research Department Schlögl, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Citation

Kaichev, V. V., Saraev, A. A., Gladky, A. Y., Prosvirin, I. P., Blume, R., Teschner, D., et al. (2017). Reversible Bulk Oxidation of Ni Foil During Oscillatory Catalytic Oxidation of Propane: A Novel Type of Spatiotemporal Self-Organization. Physical Review Letters, 119(2): 026001, pp. 026001-1-026001-5. doi:10.1103/PhysRevLett.119.026001.


Cite as: https://hdl.handle.net/21.11116/0000-0007-1661-3
Abstract
A novel type of temporal and spatial self-organization in a heterogeneous catalytic reaction is described for the first time. Using in situ x-ray photoelectron spectroscopy, gas chromatography, and mass spectrometry, we show that, under certain conditions, self-sustained reaction-rate oscillations arise in the oxidation of propane over Ni foil because of reversible bulk oxidation of Ni to NiO, which can be observed even with the naked eye as chemical waves propagating over the catalyst surface.