Separation Based on Limiting Activity Coefficients of Various Solutes in 1-Allyl-3-methylimidazolium Dicyanamide Ionic Liquid
Michał Wlazło , Joanna Gawkowska , Urszula Domańska-Żelazna
AbstractIn the present work the limiting activity coefficients (γ13∞) for 65 solutes, including polar and nonpolar solutes as alkanes, alkenes, and alkynes as well as aromatic hydrocarbons, alcohols, water, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, thiophene, and esters in the 1-allyl-3-methylimidazolium dicyanamide ([AMIM][DCA]) were determined by gas–liquid chromatography at six temperatures in the range of (308.15 to 358.15) K. The gas–liquid partition coefficients, KL at infinite dilution, and the fundamental thermodynamic functions, the limiting partial molar excess Gibbs energy, enthalpy, and entropy, were calculated. The values of selectivity and capacity for three separation problems as hexane/hex-1-ene, cyclohexane/cyclohexene, and ethylbenzene/styrene were calculated from γ13∞ and compared to literature values for imidazolium-based or dicyanamide-based ionic liquids (ILs) for the same separation problems. The data presented here shows that [AMIM][DCA] reveals one of the highest selectivities ever measured for the hexane/hex-1-ene separation.
|Journal series||Industrial & Engineering Chemistry Research, ISSN 0888-5885|
|Publication size in sheets||0.5|
|Score|| = 35.0, 28-11-2017, ArticleFromJournal|
= 35.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2016 = 2.843 (2) - 2016=3.027 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.