A cautionary note on thermal runaway reactions in mixtures of 1-alkyl-3-methylimidazolium ionic liquids and N-methylmorpholine-N-oxide

S Böhmdorfer, T Hosoya, T Röder, A Potthast, Thomas Rosenau

    Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

    2 Sitaatiot (Scopus)

    Abstrakti

    N-Methylmorpholine-N-oxide (NMMO) cannot be completely separated by extraction from mixtures with common 1,3-dialkylimidazolium ionic liquids (ILs) due to strong ionic interactions between the two components. At elevated temperatures, above approx. 90 degrees C, especially under dry conditions and in the presence of acid, alkylating or acylating agents, remaining NMMO in ILs tends to undergo autocatalytic degradation. This is a highly exothermic, unstoppable process that results in explosions, flames, and complete charring of the reaction mixtures. Thus, caution must be exercised when drying or heating ILs that were in previous contact with NMMO, and the absence of amine oxide must be confirmed to avoid potential danger.
    AlkuperäiskieliEi tiedossa
    Sivut1927–1932
    Sivumäärä6
    JulkaisuCellulose
    Vuosikerta24
    Numero5
    DOI - pysyväislinkit
    TilaJulkaistu - 2017
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Keywords

    • NMMO
    • Binary mixtures
    • Extractability
    • Exothermicity
    • Work safety

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