Abstract
Separation of benzene and cyclohexane is one of the most challenging processes in the chemical industry. In our previous paper, we examined the separation of a mixed solution of benzene and cyclohexane using a supported liquid membrane (SLM) based on ionic liquids. In this study, vapor permeation (VP) of benzene/cyclohexane through a SLM using ionic liquids based on 1-alkyl-3-methylimidazolium and quaternary ammonium salts was performed.We examined the effects of ionic liquids and the benzene fraction in the feed on the permeation flux and separation factor, and the stability of the SLM based on ionic liquid. It was found that the sorption step mainly affected the separation factor depending on the hydrophilicity of the ionic liquid. The hydrophilic liquid membrane that used N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate, which showed the highest selectivity of 47.1 for the mixed solution, gave the highest separation factor, 185 for 53 wt.% benzene and 950 for 11 wt.% benzene for the VP, which are superior to the previously reported values obtained by pervaporation. Over 1 month, a steady flux and separation factor were obtained, suggesting that the membrane was extremely stable.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
