کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
202648 460615 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of mutual solubilities of ionic liquids and water
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Determination of mutual solubilities of ionic liquids and water
چکیده انگلیسی

Two simple and universal methods for determination of solubility of ionic liquids in water are introduced in this work. The first one, which utilizes negligible vapour pressure of ionic liquids, is based on controlled evaporation of water from a sample of saturated aqueous mixture. The second one utilizes the ionic character of ionic liquids and its principle consists in measurements of electrical conductivity for series of aqueous mixtures. The methods were used for determination of aqueous solubility of five ionic liquids. Namely, 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl-1-methylpyrrolidinium bis(trifluoromethyl-sulfonyl)imide, 1-hexyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide and ethyl-dimethyl-propylammonium bis(trifluoromethylsulfonyl)imide. The aqueous solubility data were completed by the measurement of solubility of water in the studied ionic liquids so that full-valued data on liquid–liquid equilibrium in the temperature range from 288 to 343 K are reported in the article. The obtained experimental data were correlated by the NRTL equation with temperature dependent parameters.


► Two methods for determination of solubility of ionic liquids in water are introduced.
► The methods were used for determination of aqueous solubility of four ionic liquids.
► Solubility of water in the studied ionic liquids was measured.
► Full-valued data on liquid–liquid equilibrium are reported.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 316, 25 February 2012, Pages 17–25
نویسندگان
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