Vapor-liquid equilibrium data for systems ethylbenzene-anisole and p-xylene-anisole

Sood, Balbir K.; Bagga, O. P.; Raju, K. S.

doi:10.1021/je60055a009

Cited by 20 publications

(23 citation statements)

References 8 publications

(8 reference statements)

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“…The experimental VLE data of the present work for p -xylene and ethylbenzene with anisole was also compared with the reported data in the literature, and the comparison is given the Supporting Information document in Tables S1 and S2 and Figures S1 and S2, respectively. Although the nature of the T – x , y plots was similar, the shift in the curves was observed due to difference in pressures of the experimentation.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The experimental data have been checked for thermodynamic consistency and correlated with three activity coefficient models, Wilson, nonrandom two liquid (NRTL) and unversal quasichemical (UNIQUAC), and the binary interaction parameters were estimated which can be used in process modeling. The data generated for p -xylene–anisole and ethylbenzene–anisole were also compared with the data available in the literature . No data were reported in the literature for the other two pairs.…”

Section: Introductionmentioning

confidence: 99%

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Refractive Index and Vapor–Liquid Equilibrium Data for the Binary Systems of Anisole with Xylene Isomers at 93.13 kPa

2018

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Phase equilibrium behavior of binary systems of anisole with xylene isomers was analyzed experimentally. An apparatus which establishes equilibrium conditions through continuous circulation of equilibrium vapor condensate and equilibrium liquid was used. Experimental data comprising refractive indices of binary mixtures, equilibrium compositions of vapor and liquid, and equilibrium temperature are reported for all binary systems. Thermodynamic consistency of vapor−liquid equilibrium data was established for using the Herington, Van Ness and absolute mean deviation tests. Interaction parameters of activity coefficient models, Wilson, nonrandom two liquid, and universal quasichemical, which are important for accounting nonideal behavior in process modeling, are also estimated through regression of the respective binary VLE data. Although VLE data shows that binary systems are nonazeotropic in nature, a pinch in the T−x,y plot indicates that separation of all binary system using distillation may need a significant number of stages.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Refractive Index and Vapor–Liquid Equilibrium Data for the Binary Systems of Anisole with Xylene Isomers at 93.13 kPa

2018

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“…Using the linear correlation above, C p is a suitable marker for predicting the boiling temperature of large PAHs. To check the accuracy of the proposed linear equation, extra data, including large PAHs such as ovalene, were used as shown in Table . − ,− The Δ S ( T ), Δ H ( T ) and Δ G ( T ) for large PAHs could not be obtained using the G3 method, so this data is not considered in Figure a. The extra validations shown in Figure d further confirm that C p is an excellent tracer for the PAH boiling temperature.…”

Section: Results and Discussionmentioning

confidence: 99%

Gas-to-Liquid Phase Transition of PAH at Flame Temperatures

Liu

Sarathy

et al. 2020

J. Phys. Chem. A

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Significant evidence has shown that soot can be formed from polycyclic aromatic hydrocarbon (PAH) in combustion environments, but the transition of high molecular PAH from the gas phase to soot in a liquid or solid state remains unclear. In this study, the relationships between the boiling points of various planar PAHs and their thermodynamic properties are systematically investigated, to find a satisfactory marker for the phase transition event. Temperature-dependent thermodynamic properties, including entropy, specific heat capacity, enthalpy, and Gibbs free energy, are simultaneously calculated for PAHs, using density functional theory and three composite compound methods. Comparison of the results indicates that the individual G3 method, plus an atomization reaction approach, produces the most accurate thermochemistry parameters. Compared to entropy, enthalpy, and Gibbs free energy, the specific heat capacity at 298 K is found to be a better marker for the boiling point of PAHs due to the observed linear correlation, predictable characteristics, and fidelity of accuracy as a function of temperature. The correlation equation Y = 10.996X + 122.111 is proposed (where Y is the boiling temperature (K) and X is C p at 298 K (cal/K/mol)). The standard deviation is as low as 16.7 K when comparing the calculated boiling points and experimentally determined values for 25 different aromatic species ranging from benzene to ovalene (C 32 H 14 ). The effects of carbon number, structural arrangement, and partial pressure on the boiling point of large planar PAH are discussed. The results reveal that the carbon number in large planar PAH is the dominant factor determining its boiling points. It is shown that PAHs containing about 60−65 carbon atoms are likely to exist as liquids in flames, although the partial pressure of such species is very low.

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“…1-Butanol, laboratory reagent grade (BDH, India) and p-xylene (Riedel, Germany) were dried using suitable drying agents and then purified by distillation in a glass column as described elsewhere [6]. Table I summarizes some of the physical properties of the reagents used.…”

Section: Methodsmentioning

confidence: 99%

“…The equilibrated mixtures were analyzed by the refractive index method using a Bausch and Lomb Abbe-3L refractometer. The apparatus, modifications, and analytical techniques have already been described [6]. The estimated uncertainties in the measurements were 0.0002 mole fraction in composition, 0.1 K in temperature, and 0.27 kPa in pressure.…”

Section: Methodsmentioning

confidence: 99%

Isobaric Vapor–Liquid Equilibria of 1-Butanol–p-Xylene System

2006

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Isobaric vapor-liquid equilibrium data were obtained for 1-butanol-p-xylene system at 97.3 kPa using a vapor recirculating type (modified Othmer's) equilibrium still. The activity coefficients were obtained by taking into consideration vapor-phase imperfections. The experimental data for this system were tested for thermodynamic consistency and were correlated by various equations. The system forms a minimum boiling azeotrope.

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Vapor-liquid equilibrium data for systems ethylbenzene-anisole and p-xylene-anisole

Cited by 20 publications

References 8 publications

Refractive Index and Vapor–Liquid Equilibrium Data for the Binary Systems of Anisole with Xylene Isomers at 93.13 kPa

Refractive Index and Vapor–Liquid Equilibrium Data for the Binary Systems of Anisole with Xylene Isomers at 93.13 kPa

Gas-to-Liquid Phase Transition of PAH at Flame Temperatures

Isobaric Vapor–Liquid Equilibria of 1-Butanol–p-Xylene System

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