Insight into the structure of Pd/ZrO2 during the total oxidation of methane using combined in situ XRD, X.-ray absorption and Raman spectroscopy

Jan-Dierk Grunwaldt, Niels van Vegten, Alfons Baiker, Wouter van Beek

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Abstract

The structure of palladium during the total combustion of methane has been studied by a combination of the complementary in situ techniques X-ray absorption spectroscopy, Raman spectroscopy and X-ray diffraction. The study demonstrates that finely dispersed and oxidized palladium is most active for the oxidation of methane. Upon heating in the reaction mixture a sudden reduction accompanied by strong sintering of the palladium particles occurs leading to a less active catalyst. Raman spectroscopy combined with XAS shows that palladium is re-oxidized during cooling but is not as finely dispersed as in its prepared state.
Original languageEnglish
Title of host publicationJournal of Physics: Conference Series
Volume190
PublisherIOP Publishing
Publication date2009
DOIs
Publication statusPublished - 2009
Event14th International Conference on X-Ray Absorption Fine Structure - Camerino, Italy
Duration: 26 Jul 200931 Jul 2009
http://www.xafs14.it/

Conference

Conference14th International Conference on X-Ray Absorption Fine Structure
CountryItaly
CityCamerino
Period26/07/200931/07/2009
Internet address

Cite this

Grunwaldt, J-D., van Vegten, N., Baiker, A., & van Beek, W. (2009). Insight into the structure of Pd/ZrO2 during the total oxidation of methane using combined in situ XRD, X.-ray absorption and Raman spectroscopy. In Journal of Physics: Conference Series (Vol. 190). IOP Publishing. https://doi.org/10.1088/1742-6596/190/1/012160