REDUCTION OF NITROGEN MONOXIDE BY CHARCOA L

The reactivity of nitrogen monoxide (NO) with several kinds of commerc ial charcoals for the fuel use was examined at 300-500-degrees-C by us ing a pulse reaction technique (Table 1). Among the charcoals studied mitsumata (Edgeworthia) charcoal that contained the highest level of p otassium exhibited the highest activity for reduction of NO into N2. T he NO-C reaction was remarkably enhanced by Cu-Cr metal loaded on char coals. Conversion of NO significantly increased in the presence of pro pene because, in addition to the NO-C reaction, the NO-propene reactio n was promoted by potassium present in the charcoal (Table 2).