A new DRIFTS cell for the in-situ investigation of heterogeneously catalyzed reactions

IR spectroscopy is a well-established method in the characterization of het erogeneous catalysts under reaction conditions. Working in transmission mod es is the most common of currently applied technologies Yet, there are prob lems inherent in both methods (KBr wafers and self-supporting wafers) for t he in-situ investigation of heterogeneously catalyzed reactions. These prob lems can be. avoided by using the DRIFT (diffuse reflection infrared Fourie r transformation) spectroscopy. As is shown in this study, DRIFT spectrosco py proves to be a suitable method producing not only qualitative but also q uantitative results of in-situ examinations of heterogeneous catalysts.