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.
|Title of host publication||Journal of Physics: Conference Series|
|Publication status||Published - 2009|
|Event||14th International Conference on X-Ray Absorption Fine Structure - Camerino, Italy|
Duration: 26 Jul 2009 → 31 Jul 2009
|Conference||14th International Conference on X-Ray Absorption Fine Structure|
|Period||26/07/2009 → 31/07/2009|
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