N2O catalytic decomposition over nano-sized particles of Co-substituted Fe3O4 substrates

Authors: Rachid Amrousse, Akimasa Tsutsumi, Ahmed Bachar, Driss Lahcene

Abstract:
A novel total decomposition of N₂O was performed on the nano-sized particles of substituted Co_xFe_3−xO₄ magnetite (with x = 0–1). The given results showed that the partial incorporation of Fe²⁺ by Co²⁺ into Fe₃O₄ spinel substrate led to a significant amelioration in the catalytic activity for the N₂O catalytic reaction. Furthermore, the catalytic activity of prepared substances depended on the Fe2+ substitution amount by Co²⁺ cation. The N₂O conversion achieved 100% over the nano-sized Co_0.6Fe_2.4O₄ catalyst at 255, 285 and 291^◦C for pure N₂O, N₂O with the presence of oxygen and N₂O in the presence of water steam, respectively. A relative increasing of decomposition temperatures was observed after O₂ addition. Moreover, the characterization of all samples showed that the catalyst surfaces contain nano-size particles accompanied by well distribution.

Keywords:
N₂O
Catalytic decomposition
Nano-sized particles
Substituted magnetite

Published in: Applied catalysis A: General  (Volume 450, Pages 1-274, 15 January 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

N2O catalytic decomposition over nano-sized particles of Co-substituted Fe3O4 substrates

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