Elucidation of the electrochemical oxidation pathway of ammonia in dimethylformamide and the room temperature ionic liquid, 1-ethyl-3- methylimidazolium bis(trifluoromethylsulfonyl)imide

Marisa C. Buzzeo, Debora Giovanelli, Nathan S. Lawrence, Christopher Hardacre, Kenneth R. Seddon, Richard G. Compton

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The direct electrochemical oxidation of ammonia has been examined in both the organic solvent dimethylformamide (DMF) and the room temperature ionic liquid 1-ethyl-3- methylimidazolium bis(trifluoromethylsulfonyl)imide [EMIM][N(Tf)2]. The corresponding voltammetric responses have been shown to be similar in each solvent with a broad oxidative wave occurring upon the introduction of ammonia to the solution and the appearance of a new reductive wave following the oxidation. The oxidative reaction process has been examined and a suitable reaction pathway has been deduced, corresponding to the formation of ammonium cations after oxidation of the ammonia. A linear response of limiting current against vol% ammonia was observed in both DMF and [EMIM][N(Tf)2], suggesting potential application for analytical methods.

    Original languageEnglish
    Pages (from-to)888-896
    Number of pages9
    JournalElectroanalysis
    Volume16
    Issue number11
    DOIs
    Publication statusPublished - Jun 2004

    Keywords

    • Ammonia
    • Cyclic voltammetry
    • DMF
    • Linear sweep voltammetry
    • Oxidation
    • Room temperature ionic liquid

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