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

M.C. Buzzeo, D. Giovanelli, N.S. Lawrence, Christopher Hardacre, Kenneth Seddon, R.G. Compton

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

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 (11)
Issue number11
DOIs
Publication statusPublished - Mar 2004

ASJC Scopus subject areas

  • Analytical Chemistry

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