Abstract
The potential of Raman spectroscopy for the characterization of catalytic materials is outlined. Raman spectra can be recorded in situ and in real time providing molecular level information during the synthesis and operation of catalysts. The use of Raman spectroscopy over a wide temperature range, in various environments and adapted to different reactor geometries underlines the versatility of the method. Examples from current research illustrate possible applications of in situ Raman spectroscopy in catalysis. These include the controlled synthesis and structural characterization of dispersed molybdena catalysts, the characterization of defects in ceria materials and the elucidation of the NO2 storage mechanism in barium oxide used in NO x storage–reduction catalysts. The article concludes with a summary of key features of in situ Raman spectroscopy of catalysts as derived from the above examples.
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