Isobaric Vapor–Liquid Equilibrium for Ethyl Acetate + Acetonitrile + 1-Butyl-3-methylimidazolium Hexafluorophosphate at 101.3 kPa

Li, Qunsheng; Cao, Lei; Sun, Xueting; Li, Panpan; Wang, Baohua

doi:10.1021/je301204w

Cited by 21 publications

(20 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 and 2, the TÀ(x 1 , y 1 ) and VLE(x 1 Ày 1 ) comparison of ethyl acetate(1) þ acetonitrile (2) indicates that the experimental data are in good agreement with the reported results in literature [25,26,32] and are thermodynamic consistent examined by point test. The experimental data show a minimum boiling point at x 1 ¼ 0.695 and T ¼ 348.45 K, which can be interpolated from the experimental values listed in Table 2.…”

Section: Experimental Vle Resultssupporting

confidence: 88%

See 1 more Smart Citation

The isobaric vapor liquid equilibria of ethyl acetate + acetonitrile + bis(trifluoromethylsulfonyl)imide-based ionic liquids at 101.3 kPa

Zhu

et al. 2016

Fluid Phase Equilibria

Self Cite

View full text Add to dashboard Cite

Section: Experimental Vle Resultssupporting

confidence: 88%

“…Water [23] and n-hexane [24] are used as extraction solvent to extraction separation the azeotrope, but there is no further application due to the difficult solvent separation to recycle. By using ILs, the purification of acetonitrile becomes more facile [25,26]. ILs …”

Section: Introductionmentioning

confidence: 99%

The isobaric vapor liquid equilibria of ethyl acetate + acetonitrile + bis(trifluoromethylsulfonyl)imide-based ionic liquids at 101.3 kPa

Zhu

et al. 2016

Fluid Phase Equilibria

Self Cite

View full text Add to dashboard Cite

“…The nonrandom two-liquid model (NRTL) was proposed by Renon and Prausnitz (1968), and it was reported to have reproduced various VLE data containing ILs properly. − Therefore, the measurement data for methanol + MeCN and methanol + MeCN + ILs systems were also correlated by the NRTL model. In the NRTL model, nine binary adjustable parameters are needed and the objective function (average relative deviation, ARD) is defined as where N is the number of data points.…”

Section: Resultsmentioning

confidence: 99%

Vapor–Liquid Equilibria Measurement of (Methanol + Ethanenitrile + Bis(trifluoromethylsulfonyl) Imide)-Based Ionic Liquids at 101.3 kPa

Zhang

Guo

et al. 2016

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

Isobaric vapor−liquid equilibria (VLE) data of the ternary system methanol + ethanenitrile +1-ethyl-3-methylimidazolium bis-(trifluoromethylsulfonyl) imide ([EMIM][NTf 2 ]) and methanol + ethanenitrile +1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([BMIM]-[NTf 2 ]) as well as their binary system methanol + ethanenitrile (MeCN) were obtained using a improved Othmer still at 101.3 kPa. Results indicated that the addition of [EMIM][NTf 2 ] or [BMIM][NTf 2 ] can eliminate the azeotropic phenomenon of the binary system of methanol + MeCN when the mole fraction of the ionic liquids reach 0.05. Besides, the measured ternary data were well fitted with the nonrandom two-liquid model. ■ INTRODUCTIONWith increasing environmental concerns, it is necessary to separate the solvent mixtures in order to reuse them. 1 However, most of the solvents are azeotropic or close-boiling mixtures. Thus, we could not purify those solvents to the index of requirement only using some simple distillations. Several special distillation techniques have been proposed to solve this difficulty. And in those techniques, the extractive distillation is widely used in industry. 2,3 Because of the unique properties of the ionic liquid (IL)extremely low volatility, high thermal and chemical stabilities and is liquid at room temperature, for examplethe ILs have some advantages over traditional entrainer. 4 So, the isobaric VLE data containing ILs are necessary for the extractive distillation research and the process design.Ethanenitrile and methanol are extremely important solvents and cosolvents in electrochemistry, high-performance liquid chromatography and spectroscopy. Both of them have been widely used as fine chemicals in chemical and pharmaceutical process. 5−7 Industrial synthesis of ethanenitrile contains considerable amounts of impurities which is unsuitable in many applications that require high purity. In order to remove those impurities, methanol has been added as a separating agent. 8 This procedure creates a mixture of methanol and ethanenitrile. Furthermore, several chemical industries processes also bring some mixtures of them. However, methanol and ethanenitrile form an azeotrope whose separation is very difficult. As far as we know, there is no isobaric VLE data of methanol + MeCN + IL ternary system.In this study, the isobaric VLE data of methanol + MeCN binary system and their ternary system containing [EMIM]-[NTf 2 ] or [BMIM][NTf 2 ] were measured at 101.3 kPa. And we also discussed the influence of [EMIM][NTf 2 ] and [BMIM][NTf 2 ] on the VLE data of methanol + MeCN system. ■ EXPERIMENT Reagents. The solvents used were methanol, ethanenitrile, [EMIM][NTf 2 ], and [BMIM][NTf 2 ]. Methanol was obtained from Beijing Chemical Works, China. Ethanenitrile was obtained by Tianjin Fuchen Chemical Reagents Factory, China. The purities of both chemicals were above 99.5% (weight ratio) checked by gas chromatography. The ILs ([EMIM][NTf 2 ] and [BMIM][NTf 2 ]) were purchase from Shanghai Chengjie Chemical Reagents Factory ...

show abstract

“…The detailed experimental data of the ternary VLE exhaustively collected from literature by the end of November 2013, which are important for a better understanding of the thermodynamic behavior of such systems and for process simulation and optimization, are provided in Tables S3–S15 in the Supporting Information . Supporting Information Table S16 gives a summarized result.…”

Section: Structure‐property Relationsmentioning

confidence: 99%

Extractive distillation with ionic liquids: A review

et al. 2014

View full text Add to dashboard Cite

Extractive distillation is commonly used for the separation of azeotropic or close-boiling mixtures in the chemical industry. During the past decade, the use of ionic liquids (ILs) as entrainers has received considerable attention due to their unique advantages when applied in extractive distillation. This work is devoted to providing an easy-to-read and comprehensive review on the recent progress made by chemical engineers, focusing on the issues of predictive thermodynamic models, structure-property relations, separation mechanisms, and process simulation and optimization. This review spans from the molecular level to the industrial scale, to provide a theoretical insight into the molecular interactions between ILs and the components to be separated. Moreover, a comprehensive database on the vapor-liquid equilibria (VLE) and activity coefficients at infinite dilution concerning ILs is provided as Supporting Information. Concluding remarks are made on the unsolved scientific issues with respect to this promising special distillation technology.

show abstract

Isobaric Vapor–Liquid Equilibrium for Ethyl Acetate + Acetonitrile + 1-Butyl-3-methylimidazolium Hexafluorophosphate at 101.3 kPa

Cited by 21 publications

References 27 publications

The isobaric vapor liquid equilibria of ethyl acetate + acetonitrile + bis(trifluoromethylsulfonyl)imide-based ionic liquids at 101.3 kPa

The isobaric vapor liquid equilibria of ethyl acetate + acetonitrile + bis(trifluoromethylsulfonyl)imide-based ionic liquids at 101.3 kPa

Vapor–Liquid Equilibria Measurement of (Methanol + Ethanenitrile + Bis(trifluoromethylsulfonyl) Imide)-Based Ionic Liquids at 101.3 kPa

Extractive distillation with ionic liquids: A review

Contact Info

Product

Resources

About