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Decomposition of N 2 O has been studied in the temperature range 293<T<673 K over Fe-ZSM-5 with 0.3 wt% extra-framework Fe after prereduction in H 2 /Ar or Ar flow at 473<T<973 K. Two different processes of reoxidation of reduced Fe 2+ species by N 2 O were identified: (i) a fast one starting at ≈500 K involving deposition of atomic oxygen on isolated Fe...
The methanation of carbon dioxide was carried out over Ni-incorporated MCM-41 catalysts. The Ni-MCM-41 catalysts containing 1–3 wt% Ni were prepared by incorporating the Ni ions into the framework of siliceous MCM-41 with the procedure developed in our previous work [S. Lim, G.L. Haller, J. Phys. Chem. B 106 (2002) 8437]. Pretreatment using pure H 2 at different temperatures affected the reactivity...
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