19 research outputs found

    Enhancing Liquid-Phase Olefin-Paraffin Separations Using Novel Silver-Based Ionic Liquids

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    This paper describes the extraction of C5–C8 linear α-olefins from olefin/paraffin mixtures of the same carbon number using silver­(I)/<i>N,N</i>-dimethylbenzamide bis­(trifluoromethylsulfonyl)­imide ([Ag­(DMBA)<sub>2</sub>]­[Tf<sub>2</sub>N]) or silver­(I)/propylamine bis­(trifluoromethylsulfonyl)­imide ([Ag­(PrNH<sub>2</sub>)<sub>2</sub>]­[Tf<sub>2</sub>N]) as the extracting agent. The separation performance of the system increased with increasing chain length. [Ag­(DMBA)<sub>2</sub>]­[Tf<sub>2</sub>N] appeared to outperform [Ag­(PrNH<sub>2</sub>)<sub>2</sub>]­[Tf<sub>2</sub>N] in terms of both selectivity and distribution coefficient. The [Ag­(DMBA)<sub>2</sub>]­[Tf<sub>2</sub>N] system was successfully modeled using the universal quasi-chemical activity coefficient (UNIQUAC) model. These results support the potential future development of amine/amide-based ligands for producing soluble silver complexes useful for the separation of olefins from paraffins
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