Tetrathiocyanatocobaltate and bis(trifluoromethylsulfonyl)imide-based ionic liquids as mass agents in the separation of cyclohexane and cyclohexene mixtures by homogeneous extractive distillation

Abstract

Separación de ciclohexano/ciclohexeno mediante destilación extractiva empleando líquidos iónicos

In this work, the suitability of two tetrathiocyanatocobaltate-based ionic liquids, namely bis(1-ethyl-3- methylimidazolium) tetrathiocyanatocobaltate ([emim]2[Co(SCN)4]) and bis(1-butyl-3- methylimidazolium) tetrathiocyanatocobaltate ([bmim]2[Co(SCN)4]), and two bis(trifluoromethylsulfo nyl)imide-based ionic liquids, namely 1-ethyl-4-methylpyridinium bis(trifluoromethylsulfonyl)imide ([4empy][Tf2N]) and 1-butyl-4-methylpyridinium bis(trifluoromethylsulfonyl)imide ([4bmpy][Tf2N]), as mass separating agents to separate cyclohexane and cyclohexene mixtures by homogeneous extractive distillation was analysed.