Emission parameters with ammonia

A final relevant parameter is the temperature window in which the conversion of NO is at the maximum value. In fact, due to the presence of the side combustion of ammonia, the conversion of NO typically decreases at temperatures above the maximum. The presence of a sharp or broader maximum is related to the rate of reaction of ammonia with NO (or NO2) to give N2 (SCR) with respect to the reaction with O2 to give either N2 or NO (ammonia oxidation). A broader maximum is helpful in applications where there are fluctuations in the temperature of the emissions. 

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