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2002). N2O decomposition over Fe/ZSM-5: effect of high-temperature calcination and steaming. Catalysis Letters,, 205-212. https://doi.N 2 O decomposition over Fe/ZSM-5 made by the sublimation method was investigated. Further calcination or steaming treatment (700 8C) increased the decomposition rate of N 2 O. FTIR showed that such treatments lead to the disappearance of Brùnsted acid sites. The various catalysts have dierent apparent activation energies, con®rming the presence of dierent active Fe species. The observation that after high-temperature calcination a higher activity is obtained while no dealumination occurs indicates a mechanism where neutral Fe oxide clusters occluded in the zeolite micropores react at high temperature with the zeolite protons to form [FeO]like species.

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