Tóm tắt nội dung:   NOx Control There are a number of oxides of nitrogen, including nitrous oxide (N2O), nitric oxide (NO), nitrogen dioxide (NO 2), nitrogen trioxide (N 2O3), and nitrogen pentoxide (N 2O5), that are referred to collectively as NO x. The two oxides of nitrogen that are of primary concern to air pollution are NO and NO2 . NO is a colorless gas that is a precursor to NO2 and is an active compound in photochemical reactions that produce smog. NO2is a reddish brown gas that gives color to smog and...