Separation of the mixture pyridine + methylbenzene via several acidic ionic liquids: Phase equilibrium measurement and correlation

Zhang, Lianzheng; Xu, Dongmei; Gao, Jun; Zhang, Mi; Xia, Zhiming; Ma, Yixin; Zhou, Shixue

doi:10.1016/j.fluid.2017.03.009

Cited by 46 publications

(31 citation statements)

References 45 publications

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“…The apparatus used in this work was presented in our previous work. − During the ternary mixture preparation, the mass of butyl acetate was fixed, and those of the other two components were changed with one increased and the other decreased correspondingly to cover the entire two-phase region as much as possible . The chemicals were added into a round-bottomed flask with the volume of 25 mL.…”

Section: Methodsmentioning

confidence: 99%

Liquid–Liquid Equilibrium Measurements and Correlation for Ternary Systems (Butyl Acetate + 1-Butanol + Ethylene Glycol/1,3-Propanediol/Ethanolamine) at 298.15 K

et al. 2019

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For separation of the azeotropic mixture butyl acetate and 1butanol, ethylene glycol, 1,3-propanediol, and ethanolamine were chosen as the extractants. The phase equilibria for the ternary systems (butyl acetate + 1-butanol + ethylene glycol/1,3-propanediol/ethanolamine) were investigated, and the liquid−liquid equilibrium (LLE) data were determined at 298.15 K and 101.3 kPa. During the LLE measurement, the equilibrium was achieved when the prepared ternary mixture was stirred for 2 h and settled for 12 h. To evaluate the extraction capacity of the solvents, the distribution constant (D) and selectivity (S) were calculated. From the comparison of the values of D and S, ethanolamine is the best extractive solvent among the three solvents. In the meantime, the nonrandom twoliquid (NRTL) and the universal quasi-chemical (UNIQUAC) models were applied to correlate the LLE data for the systems. The values of the root mean square deviations between the experimental LLE data and calculated values were less than 0.01. Also, the binary interaction parameters of the NRTL and UNIQUAC models were optimized.

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Section: Methodsmentioning

confidence: 99%

Liquid–Liquid Equilibrium Measurements and Correlation for Ternary Systems (Butyl Acetate + 1-Butanol + Ethylene Glycol/1,3-Propanediol/Ethanolamine) at 298.15 K

et al. 2019

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“…To investigate the interactions between ILs, TFP and water, the hydrogen bond lengths, interaction energy and electron density were calculated using the Dmol 3 in the Material Studio (MS). In our previous work [41][42][43], the detailed processes of the quantum chemical calculation were presented. For the calculation of "Geometry…”

Section: Interaction Analysismentioning

confidence: 99%

Liquid-liquid phase equilibrium and interaction exploration for separation of azeotrope (2,2,3,3-tetrafluoro-1-propanol + water) with two imidazolium-based ionic liquids

Zhang

Wang

et al. 2020

Journal of Molecular Liquids

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“…For industrial applications, caustic washing technology with complicated process flow is adopted for separating phenolic compounds from coal tar, which can produce a large amount of waste alkali solution and cause environmental pollution. [12,13] Up to now, as green alternative solvents, ionic liquids (ILs) have been applied in separation processes because of their good chemical and physical properties, [14][15][16] which can be easily designed by changing the combination of anions and cations. [17][18][19][20] For instance, the imidazole based ILs was already used to separate phenols from oil.…”

Section: Introductionmentioning

confidence: 99%

Efficient extraction and theoretical insights for separating o‐, m‐, and p‐cresol from model coal tar by an ionic liquid [Emim][DCA]

Chen

Zhang

et al. 2021

Can J Chem Eng

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Cresols are valuable phenolic chemicals which are mainly separated from coal tar. The separation of cresols using sustainable technology is of importance for comprehensive utilization of coal tar. In this work, for extracting o-, m-, and pcresol from the model coal tar, an ionic liquid 1-ethyl-3-methylimidazolium dicyanamide ([Emim][DCA]) was prepared. The influence of ionic liquid dosage, extraction time, and temperature on separating o-, m-, and p-cresol was explored. The extraction efficiency was determined from the experimental results to assess the extraction ability of [Emim][DCA]. With the optimal conditions, o-, m-, and p-cresol were extracted efficiently from the model coal tar and the extraction efficiencies of o-cresol, m-cresol, and p-cresol were up to 99.50%, 99.65%, 98.38%, respectively. In the meantime, the extraction mechanism was determined by calculation of σ-profile, interaction energy, and electron density. The results showed that [Emim][DCA] and cresols formed the complexes by hydrogen bond. The formation of hydrogen bond was verified by

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Separation of the mixture pyridine + methylbenzene via several acidic ionic liquids: Phase equilibrium measurement and correlation

Cited by 46 publications

References 45 publications

Liquid–Liquid Equilibrium Measurements and Correlation for Ternary Systems (Butyl Acetate + 1-Butanol + Ethylene Glycol/1,3-Propanediol/Ethanolamine) at 298.15 K

Liquid–Liquid Equilibrium Measurements and Correlation for Ternary Systems (Butyl Acetate + 1-Butanol + Ethylene Glycol/1,3-Propanediol/Ethanolamine) at 298.15 K

Liquid-liquid phase equilibrium and interaction exploration for separation of azeotrope (2,2,3,3-tetrafluoro-1-propanol + water) with two imidazolium-based ionic liquids

Efficient extraction and theoretical insights for separating o‐, m‐, and p‐cresol from model coal tar by an ionic liquid [Emim][DCA]

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