CO₂ removal with 'switchable' versus 'classical' ionic liquids

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    Sammanfattning

    Switchable ionic liquids (SILs) are promising solvents for CO2 separation due to their high CO2 capturing efficiency and easy preparation compared to 'classical' ionic liquids. Considering viscosity, the present study has demonstrated that SILs formed at least two times stronger chemical bonds with CO2 than studied classical ionic liquids (ILs). Furthermore, the reversible properties of SILs were confirmed by evaluation of different regeneration methods. On average, molar fractions of CO2 were more than 0.3 outperforming acetate-based ILs (molar fraction of CO2 around 0.25) and more than ten times the capacity of physical ionic liquids (molar fraction 0.02). Consequently, SILs are found to be efficient CO2 absorbents operating at atmospheric pressure.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)42–50
    Antal sidor9
    TidskriftSeparation and Purification Technology
    Volym97
    DOI
    StatusPublicerad - 2012
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

    • CO2 capture
    • Viscosity
    • Ionic liquids
    • Regeneration
    • Switchable solvents

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