کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10225170 | 1701159 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Separation of acetonitrile and methanol azeotropic mixture using imidazolium-based ionic liquids as entrainers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, three imidazolium-based ionic liquids (ILs) with different anions, namely 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]), 1-butyl-3-methylimidazolium bromide ([BMIM][Br]) and 1-butyl-3-methylimidazolium acetate ([BMIM][OAc]), were tested as entrainers to separate acetonitrile and methanol mixtures. Isobaric vapor-liquid equilibrium (VLE) data of the acetonitrile (1)Â +Â methanol (2)Â +Â IL ternary systems were measured at 101.3Â kPa. Addition of ILs produced a salting-out effect on acetonitrile, thus leading to the increase of the relative volatility of acetonitrile to methanol. As IL content increased to a certain value, the azeotropic point of acetonitrile and methanol could be totally eliminated. In addition, the separation performance of ILs was closely related to anion structure, with [BMIM][OAc] producing the most significant salting-out effect orderly followed by [BMIM][Cl] and [BMIM][ Br]. Finally, the measured ternary VLE data were correlated with the nonrandom two-liquid (NRTL) model, and Ï-Profiles were used to explain the separation performance differences of the three ILs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 477, 15 December 2018, Pages 12-18
Journal: Fluid Phase Equilibria - Volume 477, 15 December 2018, Pages 12-18
نویسندگان
Zhigang Zhang, Ru Yang, Wenxiu Li, Tao Zhang, Debiao Zhang, Qinqin Zhang,