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Characterisation of active phases of a copper catalyst for methanol oxidation under reaction conditions: an in situ X-ray absorption spectroscopy study in the soft energy range |
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| Authors: | Knop-Gericke A Hävecker M Schedel-Niedrig T Schlögl R |
| Affiliation: | (1) Fritz-Haber-Institut der MPG, Faradayweg 4-6, 14195 Berlin, Germany;(2) Hahn-Meitner-Institut, Abt. SE4, Glienicker Strasse 100, 14109 Berlin, Germany;(3) BESSY, Albert-Einstein-Strasse 15, 12489 Berlin, Germany |
| Abstract: | The oxidation of methanol over copper is investigated by X-ray absorption spectroscopy in the soft X-ray range under reaction conditions. This in situ method allows the surface electronic structure of the catalyst to be correlated with its performance. The correlation reveals information about the catalytic function of various oxygen species on the surface. Oxide and metastable suboxide species affect in distinctly different ways the multiple action of copper as selective or unselective heterogeneous catalyst. |
| Keywords: | in situ O K-NEXAFS partial oxidation of methanol copper copper suboxide |
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