Identification of oxygenated ions in premixed flames of dimethyl ether and oxygen

L. Frøsig Østergaard, H. Egsgaard, S. Hammerum

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The structure of characteristic flame-ions in premixed flames of dimethyl ether and oxygen was studied by ion-molecule reactions with ammonia and collision activation with argon. The results obtained show that the flame-ions m/z 45 and m/z 47 are the methoxymethyl cation, CH3OCH2+, and protonated dimethyl ether, (CH3)(2)OH+. The flame-ion m/z 61 is a mixture of the trimethyloxonium ion, (CH3)(3)O+ and lesser amounts of protonated methyl formate and/or protonated ethyl methyl ether. The viability of an ionic mechanism to soot formation for dimethyl ether-oxygen flames is discussed on the background of ions present in the dimethyl ether flames and the reactivity of the ions.
    Original languageEnglish
    JournalPhysical Chemistry Chemical Physics
    Volume5
    Issue number15
    Pages (from-to)3126-3132
    ISSN1463-9076
    DOIs
    Publication statusPublished - 2003

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