caa a22 4500 475844602 CHVBK 20180406123910.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1023/A:1019101109313 doi (NATIONALLICENCE)springer-10.1023/A:1019101109313 High-pressure low-energy XAS: a new tool for probing reacting surfaces of heterogeneous catalysts [Elektronische Daten] [A. Knop-Gericke, M. Hävecker, Th. Schedel-Niedrig, R. Schlögl] An instrumentation is presented allowing to study the X-ray absorption edge spectra of light elements (z=3-15) in the surface-sensitive Auger yield detection at elevated pressures (mbar range). Heterogeneous catalysts can be studied for their surface electronic structure under working conditions in a flow-through reactor mode. An example of methanol oxidation to formaldehyde over copper metal is studied in detail. A new form of weakly bound atomic oxygen was found which only exists under reaction conditions. Its existence is linked to defect sites on the Cu. Several mechanistic predictions from earlier low-pressure studies could be verified with this in situ experiment. Kluwer Academic Publishers, 2000 O K-NEXAFS nationallicence Cu L-NEXAFS nationallicence catalytic oxidation of methanol over copper nationallicence copper suboxide nationallicence Knop-Gericke A. Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Hävecker M. Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Schedel-Niedrig Th Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Schlögl R. Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Topics in Catalysis Kluwer Academic Publishers 10/3-4(2000-05-01), 187-198 1022-5528 10:3-4<187 2000 10 11244 https://doi.org/10.1023/A:1019101109313 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1019101109313 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Knop-Gericke A. Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- Hävecker M. Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- Schedel-Niedrig Th Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- Schlögl R. Fritz-Haber Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers 10/3-4(2000-05-01), 187-198 1022-5528 10:3-4<187 2000 10 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer