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Ion-cyclotron resonance study of elementary stages of the catalytic oxidation of CO by N2O in the presence of VIA-group metal ions

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Abstract

Gas phase reactions of Mo+ and W+ ions with the molecules of various oxidants (NO, O2, N2O, CH2O, C2H4O) were studied using ion cyclotron resonance. In oxidation with N2O the mono-, di- and trioxide metal cations are formed consecutively. The trioxide MO3 + ions of both metals react with CO to form CO2 and MO2 + ions. In this way, catalytic reaction N2O + CO → N2 + CO2 occurs in the gas phase with MoO3 + /MoO2 + and WO3 +/WO2 + couples as catalysts. The rate constants have been measured for both stages of the catalytic cycle as well as for the stages of the catalyst preparation. Metal-oxygen bond energies were estimated for MoOx + and WOx + species with various x. The mechanism of CO oxidation with MoOx + and WOx + cations as catalysts in the gas phase is discussed in comparison with that for the oxidation over classical solid oxide catalysts.

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Authors and Affiliations

  1. Boreskov Institute of Catalysis, Pr. Akademika Lavrentieva 5, 30090, Novosibirsk, Russia

    Andrey V. Kikhtenko, Vladimir B. Goncharov & Kirill I. Zamaraev

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  1. Andrey V. Kikhtenko
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  2. Vladimir B. Goncharov
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  3. Kirill I. Zamaraev
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Kikhtenko, A.V., Goncharov, V.B. & Zamaraev, K.I. Ion-cyclotron resonance study of elementary stages of the catalytic oxidation of CO by N2O in the presence of VIA-group metal ions. Catal Lett 21, 353–360 (1993). https://doi.org/10.1007/BF00769487

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  • DOI: https://doi.org/10.1007/BF00769487

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