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Author(s): Sandra Corderí
Noélia Calvar
Elena Gómez
Ángeles Domínguez
Title: Capacity of ionic liquids [EMim][NTf2] and [EMpy][NTf2] for extraction of toluene from mixtures with alkanes: Comparative study of the effect of the cation
Issue Date: 2012
Abstract: The ionic liquids 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [EMim][NTf2] and1-ethyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide, [EMpy][NTf2] have been studied as solventsfor the extraction of toluene from mixtures with alkanes (heptane or cyclohexane). The liquidliquidequilibria of ternary systems {heptane or cyclohexane + toluene + [EMim][NTf2] or [EMpy][NTf2]} and{heptane + cyclohexane + [EMim][NTf2] or [EMpy][NTf2]} at 298.15K and atmospheric pressure weredetermined. The solute distribution ratio and selectivity derived from the tie-lines were used to determineif these ionic liquids can be used as extraction solvents. The tie-lines were satisfactorily correlatedby means of the thermodynamic NRTL model for ternary systems with [EMpy][NTf2] and with NRTL andUNIQUAC models for the ternary systems with [EMim][NTf2].
Subject: Ciências Tecnológicas, Ciências da engenharia e tecnologias
Technological sciences, Engineering and technology
Scientific areas: Ciências da engenharia e tecnologias
Engineering and technology
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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