The development of nitric oxide removal catalysts for exhaust gases from stationary source

Abstract

This research investigated the catalytic behavior of V2O5/TiO2 catalysts for the selective catalytic reduction (SCR) of NOx with ammonia reaction. The main objective of this research is to find a suitable catalyst for this reaction. Preliminary study under the presence of SO2 and H2O was also performed in this reaction. From the results, the optimal vanadium oxide loading is around 23 wt%. Too low loading will result in too high ammonia oxidation in the temperature over 300C. On the other hand, too high loading will decrease activity. When added 50 ppm SO2 only, it was found that activity sharply decreases about 40-60% due to SO2 deactivation. H2O has no effect on the deactivation of catalyst.