Vapor–Liquid Equilibria Measurements for the Ninen-Alkane/Ketone Pairs Comprising 2-, 3-, and 4-Heptanone withn-Octane,n-Nonane, andn-Decane

Cripwell, Jamie T.; Schwarz, Cara E.; Burger, Andries J.

doi:10.1021/je500731x

Cited by 16 publications

(24 citation statements)

References 10 publications

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“…In Wisniak’s L – W area test, the values of integrals L and W should be approximately identical, and a deviation factor D is defined, with D < 3–5 indicating thermodynamic consistency. For the point-to-point test, the ratio of L i to W i for the binary system should all approach the value of 1 (0.92 < L i / W i < 1.10) at all points. − …”

Section: Resultsmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibrium Data for the Binary System of Water + 2-Methylpyridine at 101.3, 60.0, and 20.0 kPa

et al. 2017

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Isobaric vapor−liquid equilibrium (VLE) data for the binary system of water + 2-methylpyridine were determined by using Fisher VLE 602 equipment at 101.3, 60.0, and 20.0 kPa to assist with the design of the separation process by distillation. All of the binary data at different pressures were considered to be thermodynamically consistent according to Wisniak's area and point test. The results showed that the binary system at all three pressures formed the minimum boiling azeotropes and exhibited a positive deviation from Raoult's law. The binary VLE data were correlated by using NRTL-HOC, UNIQUAC-HOC, and Wilson-HOC models with minor deviations, and the result showed that all three models were in good agreement with the experimental data. The azeotropic temperatures and compositions at 101.3, 60.0, and 20.0 kPa were determined by the NRTL-HOC model, respectively, which showed that the azeotropic composition of 2-methylpyridine tended to decrease with the decline in system pressure.

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Section: Resultsmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibrium Data for the Binary System of Water + 2-Methylpyridine at 101.3, 60.0, and 20.0 kPa

et al. 2017

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“…An all-glass dynamic recirculating still, manufactured by Pilodist, was used to measure the VLE phase behavior of the five binary systems at a subatmospheric pressure of p = 40 kPa. A full schematic representation and detailed discussion of the commercial VLE 100 D still that was utilized in this work have been provided previously. , The heart of the still consists of a mixing chamber, a boiling chamber, a Cottrell tube (spiral contact line), a demixing chamber, and a return system. The electrical immersion heater supplies enough heat to the liquid mixture for partial evaporation.…”

Section: Methodsmentioning

confidence: 99%

“…The molecule + molecule binary parameters (A ij , A ji , B ij , and B ji ) were obtained by minimizing the objective function (OF) shown in eq 3. 39 A B measured systems. In Table 13, the temperature, T, and vapor mole fraction, y 1 , percentage absolute average deviations (% AAD) and root mean square deviations (RMSD) for each model are provided.…”

Section: Thermodynamic Modelingmentioning

confidence: 99%

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Low-Pressure VLE Measurements and Thermodynamic Modeling, with PSRK and NRTL, of Binary 1-Alcohol + n-Alkane Systems

Ferreira

Schwarz

2018

J. Chem. Eng. Data

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New subatmospheric vapor−liquid equilibrium (VLE) data for five binary 1-alcohol + n-alkane systems are presented. An all-glass dynamic recirculating still was used to measure the phase behavior of the 1-pentanol + n-nonane, 1-hexanol + n-decane, 1-heptanol + n-undecane, 1-octanol + n-dodecane, and 1-decanol + n-tetradecane systems at 40 kPa. Each of the five systems displayed an azeotrope, indicating complex molecular interactions. Thermodynamic modeling was conducted with (1) the NRTL activity coefficient model, (2) the predictive Soave− Redlich−Kwong (PSRK) group contribution equation of state (EoS) with original UNIFAC model parameters, and (3) PSRK with newly regressed NRTL parameters. The models, in order of decreasing performance, were NRTL > PSRK (with UNIFAC) > PSRK (with NRTL). Therefore, the PSRK with UNIFAC parameters G E -EoS investigated in this article showed that accurate 1-alcohol + n-alkane VLE data can be predicted without the need to first measure experimental data.

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“…In two previous works, a more systematic approach was taken in the generation of new phase equilibrium data for binary systems of hydrocarbons with medium length linear ketones 19 and esters. 20 There, VLE data for different structural isomers of the polar molecule coupled with the same n-alkane were generated and, in this way, the effect of the polar functional group location on phase behavior of the different isomers could be investigated.…”

Section: Introductionmentioning

confidence: 99%

Vapor–Liquid Equilibria Measurements for Di-n-Propyl Ether and Butyl Ethyl Ether with n-Heptane

2016

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Isobaric vapor−liquid equilibrium (VLE) data were measured for two binary systems comprising n-heptane with one of di-n-propyl ether (DNPE) or butyl ethyl ether (BEE) at 60 kPa. Slight positive deviations from ideality were apparent in both systems, but not so strong as to result in azeotropic behavior. The data for both systems were shown to be thermodynamically consistent using both the Wisniak L/W and McDermott-Ellis consistency tests. Data were further well correlated by the nonrandom twoliquid (NRTL) activity coefficient model and fairly predicted using the Dortmund-modified UNIFAC model. The data presented serve to fill the gap in the literature for data sets of structural isomers of C 6 ethers with n-heptane, where data for the linear isomers are absent. This data, combined with that available for the branched isomers, serve to highlight the role of polar functional group location on associated mixture behavior in such systems.

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Vapor–Liquid Equilibria Measurements for the Ninen-Alkane/Ketone Pairs Comprising 2-, 3-, and 4-Heptanone withn-Octane,n-Nonane, andn-Decane

Cited by 16 publications

References 10 publications

Isobaric Vapor–Liquid Equilibrium Data for the Binary System of Water + 2-Methylpyridine at 101.3, 60.0, and 20.0 kPa

Isobaric Vapor–Liquid Equilibrium Data for the Binary System of Water + 2-Methylpyridine at 101.3, 60.0, and 20.0 kPa

Low-Pressure VLE Measurements and Thermodynamic Modeling, with PSRK and NRTL, of Binary 1-Alcohol + n-Alkane Systems

Vapor–Liquid Equilibria Measurements for Di-n-Propyl Ether and Butyl Ethyl Ether with n-Heptane

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