Separation of Aromatic Component from Aliphatic Component by Using Task Ionic Liquid

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Ebrahimi Gardeshi, Mitra | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43602 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Sayf Kordi, Ali Akbar; Ahmadi, Amir Naser
Abstract:
In this work 1-(2-hydroxyethyl)-3-methylimidazoliumbis{(trifluoromethyl) sulfonyl}imide ([hemim][NTf2]) and 1-benzyl-3-methylimidazoliumbis{(trifluoromethyl) sulfonyl}imide ([bzmim][NTf2]) ionic liquids were used to study the effect of introducing hydroxyl and benzyl groups to the imidazolium cation on aliphatic/aromatic separations. Toluene separation from heptanes has been investigated by extraction using ionic liquids. Finally, a realistic model for survey the data was used. The liquid-liquid equilibrium (LLE) data for the {heptane + toluene + [hemim][NTf2]}, {heptane + benzene + [hemim][NTf2]} , {heptane + toluene + [bzmim][NTf2]} systems were measured at 313.2 K and atmospheric pressure and acceptable results were obtained. After the extraction operation, ionic liquid was recovered in 6 steps and acceptable results were obtained in order to reuse them. Experimental LLE data are successfully correlated with NRTL model, and good match between the model and experimental data was obtained
Keywords:
Ionic Liquids ; Liquid-Liquid Extraction ; Thermodynamic Modeling ; Separation Factors ; Distribution Ratio

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