Definitions for "Selective catalytic reduction"
Keywords:  nox, ammonia, scr, catalyst, urea
a method where ammonia is injected into flue gases in the presence of a catalyst to reduce NO and NO2 to nitrogen and water
Term frequently used as a synonym for catalytic reduction of NOx in diesel exhaust or flue gases by nitrogen containing compounds, such as ammonia or urea. Such SCR systems are commercially available for stationary applications and are being developed for mobile diesel engines. Since "selective catalytic reduction" is a generic term which also applies to other reactions, its use may lead to confusion in some situations.
A process for removing NOX, by reducing with a reductant such as ammonia over a catalyst. Being developed for commercial vehicle exhaust treatment worldwide