کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5408717 1506540 2017 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vapor pressure measurements and predictions for the binary and ternary systems containing ionic liquid [EMIM][Tf2N]
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Vapor pressure measurements and predictions for the binary and ternary systems containing ionic liquid [EMIM][Tf2N]
چکیده انگلیسی
The vapor pressures of water + 1-ethyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)-amide ([EMIM][Tf2N]) binary system at temperatures ranging from 323.2 to 358.2 K and mole fraction of ionic liquid (IL) ranging from 0.05 to 0.90 were measured using a modified equilibrium still. The results showed that with the addition of IL, the vapor pressure of binary system is lower. The predictive thermodynamic models, i.e., UNIFAC-Lei and COSMO-RS models were used to predict the vapor pressure with the ARDs of 3.55% and 7.69%, respectively. Then, the adsorption amount of H2O in [EMIM][Tf2N] and ZIF-7/ZIF-8 mixture were predicted by the lever rule combining the UNIFAC-Lei model with GCMC simulation. The predicted results show a satisfactory agreement with the experimental data. Moreover, the vapor pressures of water + [EMIM][Tf2N] + ZIF-7/ZIF-8 ternary systems were measured with the mass fractions of ZIF-7/ZIF-8 from 0.005 to 0.05. However, it was found that the addition of ZIFs into water and IL mixture has little effect on the vapor pressure in the concentration range investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 231, April 2017, Pages 272-280
نویسندگان
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