Abstract
The NO-NH3 reaction was studied over supported Cu20 catalyst, and decomposition of NO over the catalyst was also examined. It was observed that the catalytic activity of Cu20 for the NO-NH3 reaction was much lower than that of CuO; it was confirmed that the degrada- lion of the catalysts used in the previous study was due to the reduction of CuO to form Cu20 during the reaction. Nitrous oxide has higher oxidation activity for Cu20 than that for CuO, and it was probably due to the high electron density of Cu20. Alumina carrier was more favorable than silica one for both reactions.
