文献类型：期刊文献

英文题名：Experimental determination of vapor liquid equilibrium for methanol?+?methyl propionate?+?1-butyl-3-methylimidazo-lium bis(trifluoromethylsulfonyl)imide at atmospheric pressure

作者：Lu, Qianlei[1]; Li, Jinlong[2]; Peng, Changjun[1]; Liu, Honglai[1]

机构：[1] State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, China; [2] School of PetroChemical Engineering, Changzhou University, Changzhou, 213164, China

年份：2019

卷号：132

起止页码：289

外文期刊名：Journal of Chemical Thermodynamics

收录：EI(收录号：20190306384747)

语种：英文

外文关键词：Distillation - Binary mixtures - Ionic liquids - Atmospheric pressure

摘要：Ionic liquid (IL) was selected as extractive distillation entrainer to separate the binary mixture of methanol and methyl propionate with the lowest azotropic temperature. Experimental determination of isobaric vapor-liquid equilibrium for the system of methanol + methyl propionate + 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][NTf2]) was made at atmospheric pressure with an all-glass dynamic recirculating still. The results show that the addition of [BMIM][NTf2] can produce an obvious salting-out effect and well enhances the relative volatility of methanol to methyl propionate, and the azeotropy of the investigated binary system is ultimately eliminated by increasing the concentration of IL to a certain value in liquid phase. Additionally, the experimental data were well fitted with the NRTL model and the binary parameters were obtained. ? 2019 Elsevier Ltd