Comparison of Catalytic Decomposition of Dinitrogen Oxide and Nitrogen Monoxide over Cu/ZSM-5 and Cu/Y Zeolites

Article abstract of DOI:10.1246/bcsj.71.947

A comparative study of NO and N₂O decomposition over Cu/ZSM-5 and Cu/Y zeolites with various Cu loading levels has been carried out at 523-823 K. The Arrenhius plot of NO decomposition tended to level off above 773 K, as reported in the literature, while that of N₂O decomposition was linear. It was noted that the reactivity of N₂O decomposition rose much more sharply than that of NO decomposition with an increase in the level of the copper-ion exchange. The implications of these results on the reaction mechanism were discussed. In addition, the adsorption of NO on Cu/ZSM-5 and Cu/Y was measured by IR at 173-373 K and the results were compared with the catalytic decomposition results.