Electrochemical synthesis of ammonia using Fe3Mo3N catalyst and carbonate-oxide composite electrolyte

Ibrahim A Amar, Rong Lan, Christophe TG Petit, Shanwen Tao

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    Abstract

    Iron molybdenum nitride catalyst (Fe3Mo3N) was synthesised via a temperature-programmed reduction (TPR) of the corresponding precursor by flowing pure ammonia gas. The catalyst was characterised by x-ray diffraction (XRD) and scanning electron microscopy (SEM). Ammonia was successfully synthesised for the first time from hydrogen and nitrogen at atmospheric pressure using
    Fe3Mo3N-Ag composite as cathode, Ag-Pd alloy as anode and LiAlO2-carbonate composite as solid electrolyte. Ammonia formation was observed at three
    different temperatures 400, 425 and 450 ºC and the maximum rate of ammonia production was up to 1.88 × 10-10 mol s-1cm -2 at 425 ºC and 0.8 V. This
    experiment indicates that metal nitrides can be used as ammonia synthesis catalysts in theelectrochemical synthesis process.
    Original languageEnglish
    Pages (from-to)3757-3766
    Number of pages9
    JournalInternational Journal of Electrochemical Science
    Volume10
    Early online date23 Mar 2015
    Publication statusPublished - 1 May 2015

    Bibliographical note

    This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).

    Keywords

    • Electrochemical synthesis of ammonia
    • Nitrides
    • Oxide-carbonate composite electrolyte
    • Fe3Mo3N
    • catalysis

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