Determination of N 2 O Emissions Levels in the Selective Reduction of NO x by NH 3 Over an On-Site-Used Commercial V 2 O 5 –WO 3 /TiO 2 Catalyst Using a Modified Gas Cell

The formation of N 2 O in NH 3 –SCR deNO x reaction over an on-site-used commercial V 2 O 5 –WO 3 /TiO 2 catalyst has been measured using an on-line IR system with a modified gas cell. The N 2 O could be formed by the SCR and NH 3 oxidation reactions. These two reactions were particularly enhanced with the on-site-used sample.