Effect of task specific thiocyanate based ionic liquids on relative volatility of cyclohexane and benzene azeotropic mixture

Gonfa, G. and Bustam, M.A. and Muhammad, N. and Ullah, S. (2017) Effect of task specific thiocyanate based ionic liquids on relative volatility of cyclohexane and benzene azeotropic mixture. Journal of Molecular Liquids, 238. pp. 208-214. ISSN 01677322

Full text not available from this repository.
Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

The relative volatilities of cyclohexane (Cy) to benzene (Bz) in the presence of eight task-specific imidazolium thiocyanate ionic liquids (ILs) were measured using headspace gas chromatography. The ILs contain nitrile, ally, benzyl and hydroxyl functional group in their imidazolium cations and thiocyanate as anion. The effects of incorporation of nitrile, allyl, benzyl and hydroxyl functional groups in imidazolium alkyl chain on the relative volatility of Cy to Bz were investigated using experiment and quantum calculations. COSMO-RS model was used to study the polarity (charge distribution) of the ILs and the solutes. Density functional theory (DFT) was employed to investigate the cation-anion interaction energies and IL-Bz/Cy binding energies. The structural variations of the imidazolium cation influence the performance of the ILs. Moreover, the performances of the ILs were compared with two typical conventional entrainers, dimethyl sulfoxide (DMSO) and N,N-dimethylformamide (DMF). Except two hydroxyl containing ILs, the remaining six ILs show higher Cy to Bz relative volatility values compared to the bench marked conventional solvents. © 2017

Item Type: Article
Additional Information: cited By 13
Uncontrolled Keywords: Benzene; Benzene refining; Binding energy; Chromatography; Cyanides; Cyclohexane; Dimethyl sulfoxide; Distillation; Gas chromatography; Ionic liquids; Liquids; Organic solvents; Positive ions, Cation-anion interactions; COSMO-RS; Dimethyl sulfoxide (DMSO); Entrainer; Extractive distillation; Headspace gas chromatography; N ,N-Dimethylformamide; Relative volatility, Density functional theory
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 16:20
Last Modified: 09 Nov 2023 16:20
URI: https://khub.utp.edu.my/scholars/id/eprint/8568

Actions (login required)

View Item
View Item