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Methanol oxidation on Ru catalysts: Reaction pathways and catalytically active sites

MPS-Authors
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Blume,  Raoul
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Hävecker,  Michael
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Zafeiratos,  Spiros
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Teschner,  Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Vass,  Elaine
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schnörch,  Peter
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Knop-Gericke,  Axel
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Kiskinova,  Maya
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Blume, R., Hävecker, M., Zafeiratos, S., Teschner, D., Vass, E., Schnörch, P., et al. (2007). Methanol oxidation on Ru catalysts: Reaction pathways and catalytically active sites. Talk presented at Russian-German-Seminar on Catalysis. Altai Mountains, Siberia. 2007-07-09 - 2007-07-12.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-0057-3
Abstract
Surface composition and corresponding catalytic activity and selectivity of model Ru catalysts in methanol oxidation have been studied in the 10-1 mbar pressure range for three oxidation regimes, combining in situ synchrotron based X-ray photoelectron spectroscopy (XPS) with simultaneous monitoring by online mass spectrometry the products released to the gas phase. Ru 3d5/2 and O1s XP core level spectra provide clear evidence that the composition of catalytically active steady states exhibiting different activity and selectivity originate from interactions with reactants and are dynamically controlled by the reactants partial pressure and temperature.