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Vapor–Liquid Equilibrium Experiment for Butanone and Ethyl Acetate at 101.3 kPa
Journal of Chemical & Engineering Data ( IF 2.6 ) Pub Date : 2021-12-13 , DOI: 10.1021/acs.jced.1c00690
Yanqi Wang 1 , Yi Li 1 , Jin Guo 1 , Hongkang Zhao 1 , Feihu Li 1 , Qunsheng Li 1
Affiliation  

The formation of azeotrope brings severe challenges to the separation of butanone and ethyl acetate, two important chemical raw materials. In this article, two ionic liquids, 1-hexyl-3-methylimidazolium bis[(trifluoromethyl) sulfonyl] {[HMIM][NTf2]} and 1-ethyl-3-methylimidazolium bis[(trifluoromethyl) sulfonyl] {[EMIM][NTf2]}, and ethylene glycol (EG) were selected as entrainers to separate butanone and ethyl acetate. Vapor–liquid equilibrium data of butanone–ethyl acetate–[EMIM][NTf2], butanone–ethyl acetate–[HMIM][NTf2], and butanone–ethyl acetate–EG were measured at atmospheric pressure. The results show that the three extractants can effectively break the azeotrope of butanone–ethyl acetate, and the significant salt effect makes [EMIM][NTf2] and [HMIM][NTf2] show better separation ability than EG. Then, a non-random two liquid (NRTL) thermodynamic model was further used to fit the experimental data, and the average relative deviation was only 0.033, indicating that the NRTL model can well describe the influence of these three entrainers on the phase equilibrium behavior of butanone–ethyl acetate.

中文翻译:

101.3 kPa 下丁酮和乙酸乙酯的汽液平衡实验

共沸物的形成给丁酮和乙酸乙酯这两种重要的化工原料的分离带来了严峻的挑战。在本文中,两种离子液体,1-hexyl-3-methylimidazolium bis [(trifluoromethyl) sulfonyl] {[HMIM][NTf 2 ]} 和 1-ethyl-3-methylimidazolium bis [(trifluoromethyl) sulfonyl] {[EMIM]选择[NTf 2 ]}和乙二醇(EG)作为夹带剂分离丁酮和乙酸乙酯。丁酮-乙酸乙酯-[EMIM][NTf 2 ]、丁酮-乙酸乙酯-[HMIM][NTf 2的汽液平衡数据],以及在大气压下测量丁酮-乙酸乙酯-EG。结果表明,三种萃取剂均能有效破坏丁酮-乙酸乙酯的共沸物,显着的成盐作用使[EMIM][NTf 2 ]和[HMIM][NTf 2 ]表现出比EG更好的分离能力。然后,进一步使用非随机二液(NRTL)热力学模型对实验数据进行拟合,平均相对偏差仅为0.033,说明NRTL模型能够很好地描述这三种共沸剂对相平衡行为的影响。丁酮-乙酸乙酯。
更新日期:2022-01-13
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