Abstract
Differential scanning calorlmetry (DSC) has the advantage that it allows the chemical reaction rate to be followed at temperature-programmed conditions. In complicated reactions, such as the reaction of NO and NH3 over a catalyst, it is unwise to employ the heat of the overall reaction as a measure of the extent of the reduction of NO. Therefore, these measurements are accompanied by mass spectrometric analysis in order to measure the activity and selectivity of the reaction.This paper presents the results of the effect the heating rate has on the performance of a selective V2O5 on TiO2/SiO2 catalyst. Moreover, typical results of the reaction of NO, NH3 and O2 over samples of a non-selective catalyst (CuO on SiO2) and a selective catalyst (V2O5 on TiO2/SiO2) are presented.
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