Abstract
The activity coefficients at infinite dilution (γ13∞) for 64 solutes including water in two new ammonium-based ionic liquids (ILs), the dimethyldodecylphenoxyethylammonium bis{(trifluoromethyl)sulfonyl}imide, [N1,1,12,2OPh][NTf2] and dimethyldodecylphenoxyethylammonium dicyanamide, [N1,1,12,2OPh][DCA] were determined by gas-liquid chromatography at six temperatures in range of (318.15–368.15) K and (328.15–378.15) K for [N1,1,12,2OPh][NTf2] and [N1,1,12,2OPh][DCA], respectively. The thermodynamic functions, the limiting partial molar excess Gibbs energy, enthalpy and entropy were calculated. The values of selectivity and capacity for water/butan-1-ol separation problem were calculated from γ13∞ and compared to literature values for ammonium-based or other selected ionic liquids for the same separation problem. On the bases of the results, the intermolecular interactions of the chosen ILs and solutes were discussed. The data presented here shows that [N1,1,12,2OPh][NTf2] reveals attractive selectivity with low capacity and [N1,1,12,2OPh][DCA] shows attractive capacity with low selectivity in the water/butan-1-ol separation.
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.
