Reduction is the key to form organic nitrogen oxides (R - NO2 or R - ONO) intermediates. C3H6 O2 is fully activated, and is effective to produce organic nitrogen oxides indispensable conditions. He in Ag/SAPO - 34  research also confirms this. Visible, organic nitrogen intermediates is hydrocarbon selective reduction of NOX play a key role in the middle of the species.
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