Isobaric Vapor–Liquid Equilibrium for tert-Butyl Alcohol + Water + Propane-1,3-Diol + 1-Ethyl-3-Methylimidazolium Chloride at 101.3 kPa

Cui, Xianbao; Cheng, Qinglong; Liu, Haofei; Lin, Xue; Zhou, Jinbo; Zhang, Ying; Feng, Tingting; Zhang, Kai

doi:10.1007/s12209-018-0125-y

Cited by 5 publications

(3 citation statements)

References 32 publications

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“…Experimental data The binary VLE experimental data for TBA (1) + water (2) were obtained at atmospheric pressure and the results are shown in Table 3. The experimental results were in good agreement with data from the literature 23,26,27 and the results are compared in Fig. 1.…”

Section: Fundamental Equationsupporting

confidence: 84%

“…12. Moreover, α 12 with the addition of the two phosphate‐based ILs ([MMIM][DMP] or [EMIM][DEP]) is compared with that with the addition of other ILs or mixed solvents 23, 24, 26‐28 in Fig. 12.…”

Section: Resultsmentioning

confidence: 99%

“…and the result showed that the azeotropic point disappeared after addition of [EMIM][DCA]. The mixed solvent of 1,3‐propanediol and [EMIM][Cl] in various ratios was used by Cui et al 27 . and the results showed that the mixed solvent not only enhanced the volatility of TBA relative to water but also had lower viscosity compared with [EMIM][Cl].…”

Section: Introductionmentioning

confidence: 99%

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Isobaric vapor–liquid equilibrium of tert‐butanol + water + ionic liquids at atmospheric pressure

Jia

Zhang

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: tert-Butanol (TBA) and water form an azeotrope at atmospheric pressure. Therefore, extractive distillation was adopted to separate the azeotropic mixture. As a new kind of solvent, the ionic liquids (ILs) 1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) and 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][DEP]) were chosen to break the azeotropic point in extractive distillation. RESULTS: For the ternary mixture of TBA + water + ILs, the isobaric vapor-liquid equilibrium data at atmospheric pressure for three IL mole fractions (0.1, 0.2 and 0.3) were measured. The results indicated that the volatility of TBA relative to water became higher after [MMIM][DMP] or [EMIM][DEP] was added. The nonrandom two-liquid (NRTL) model and the COSMO-RS theory were used to predict the ternary experimental data. The predicted results from the NRTL model showed good agreement with the experimental data. The predicted results from COSMO-RS showed that the vapor-phase mole fraction basically agreed with the experimental data and the equilibrium temperatures were lower than the experimental data. ⊞-Profiles, ⊞-potentials and ⊞-surfaces were calculated based on COSMO-RS. The results were the same as for the experiments, namely the interaction between water and ILs was stronger than other interactions; the affinity of water and [MMIM][DMP] was stronger than that of water and [EMIM][DEP].

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Section: Fundamental Equationsupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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