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Author(s): Irene Domínguez
Noélia Calvar
Elena Gómez
Ángeles Domínguez
Title: Separation of toluene from cyclic hydrocarbons using 1-butyl-3-methylimidazolium methylsulfate ionic liquid at T = 298.15 K and atmospheric pressure
Issue Date: 2011
Abstract: In this paper the extraction of toluene from cyclic hydrocarbons (cyclohexane, or methylcyclohexane, orcyclooctane, or cyclohexene) was analyzed by liquid extraction with 1-butyl-3-methylimidazoliummethylsulfate ionic liquid, [BMim][MSO4], as solvent. The experimental (liquid + liquid) equilibrium(LLE) data were determined at T = 298.15 K and atmospheric pressure. Solubility curves were obtainedby the cloud point method and tie-line compositions were determined by density measurement. An analysisof the influence of different cyclic hydrocarbons on the extraction was performed.The effectiveness of the extraction of toluene from cyclic hydrocarbons was evaluated by means of thesolute distribution ratio and selectivity values. The degree of consistency of the experimental LLE datawas ascertained using the OthmerTobias and Hand equations. The experimental data for the (liquid +liquid) equilibria of the ternary systems were correlated with the Non-Random Two-Liquid (NRTL) andUNIversal QUAsi-Chemical (UNIQUAC) thermodynamic models.
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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