Please use this identifier to cite or link to this item: http://hdl.handle.net/10321/2634
Title: Application of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ionic liquid for the different types of separations problem: Activity coefficients at infinite dilution measurements using gas-liquid chromatography technique
Authors: Singh, Sangeeta 
Bahadur, Indra 
Naidoo, Paramespri 
Ramjugernath, Deresh 
Keywords: Activity coefficient at infinite dilution;1-butyl-3-methylimidazolium;bis(trifluoromethylsulfonyl)imide;Gas–liquid chromatography;Separation;Selectivity
Issue Date: 2016
Publisher: Elsevier
Source: Singh, S. et al. 2016. Application of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ionic liquid for the different types of separations problem: Activity coefficients at infinite dilution measurements using gas-liquid chromatography technique. Journal Of Molecular Liquids, 220: 33-40.
Abstract: The present work focussed on application of the environmental friendly 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([BMIM]+[Tf2N]−) ionic liquid for the separations of (alkane/aromatic), (al-kane/alk-1-ene), (cycloalkane/aromatic) and (water/alkan-1-ol) using gas-liquid chromatography (GLC) tech-nique. In this reason the activity coefficients at infinite dilution, γ∞13, for 31 organic solutes (alkanes, cycloalkanes, alkenes, alkynes, aromatics, alkanol and ketones) and water in ionic liquid were measured at temper-atures of (323.15, 333.15, 343.15, 353.15 and 363.15) K. Stationary phase loadings of (42.83 and 68.66) % by mass were used to ensure repeatability of measurements. Density and viscosity values were measured to confirm the purity of ionic liquid. Partial molar excess enthalpies at infinite dilution, ΔH1,∞, were also determined. The selectiv-ities, Sij∞, and capacities, kj∞, were determined for the above separations. The separating ability of the investigated ionic liquid was compared with previously investigated ionic liquids and industrial solvents such as sulfolane, n-methyl-2-pyrrolidine (NMP) and n-formylmorpholine (NFM).
URI: http://hdl.handle.net/10321/2634
ISSN: 0167-7322 (print)
1873-3166 (online)
Appears in Collections:Research Publications (Applied Sciences)

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