Location, Stability, and Reactivity of Oxygen Species Generated by N2O Decomposition over Fe-ZSM-5 and Fe-Beta Zeolites
Journal of Molecular Catalysis A: Chemical
||Fe-Beta, Fe-ZSM-5, Isotope exchange, N2O decomposition, Oxygen species
Sobolev Vladimir I.
Koltunov Konstantin Yu.
Boreskov Institute of Catalysis, Pr. Akademika Lavrentieva, 5, Novosibirsk 630090, Russia
Novosibirsk State University, Pirogova, 2, Novosibirsk 630090, Russia
Reactivity of oxygen species generated by N2O decomposition over Fe-ZSM-5 and Fe-Beta zeolites was investigated using oxygen isotopic exchange as test reaction. The generated species are very stable up to 300 °C in the absence of the organic traces or residual N2O in the gas phase. The reactivity of the oxygen species towards organics depends on the size of the organic molecules and their ability to penetrate into the zeolite pores. For example, in case of Fe-ZSM-5 zeolite, the oxygen species react readily with toluene, but stay intact with more bulky 1,3,5-trimethylbenzene.