Critical behavior of binary mixture of {x C6H5CN + (1 −x) CH3(CH2)12CH3}: Measurements of coexistence curves, turbidity, and heat capacity

Yin, Tianxiang; Lei, Yuntao; Huang, Meijun; Chen, Zhiyun; Mao, Chunfeng; An, Xueqin

doi:10.1016/j.jct.2010.12.002

Cited by 22 publications

(10 citation statements)

References 48 publications

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“…Methanol 32 Table 4 TABLE 7 SLE results from DISQUAC (DQ), using interaction parameters from Table 4 TABLE 9 Molar excess enthalpies, E m H , at equimolar composition and at temperature T, and 0. Table 4; e ERAS result using parameters from Table 5 TABLE 10 Molar excess volumes, E m V , at equimolar composition and at temperature T, for 1-alkanol ( nonane [125]; ( ), tetradecane [128]; ( ), heptadecane [129]. Solid lines, DISQUAC calculations with interaction parameters listed in Table 4.…”

Section: Disquac Interaction Parametersmentioning

confidence: 99%

Thermodynamics of mixtures containing aromatic nitriles

González¹,

Alonso-Tristán

Hevia³

et al. 2018

The Journal of Chemical Thermodynamics

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The coexistence curves of liquid-liquid equilibrium (LLE) for the mixtures: phenylacetonitrile + heptane, + octane, + nonane, + cyclooctane, or + 2,2,4-trimethylpentane and for 3-phenylpropionitrile + heptane, or + octane are reported. Aromatic nitrile + alkane, + aromatic hydrocarbon or + 1 alkanol systems are investigated using a set of thermophysical properties: phase equilibria (solid-liquid, SLE, vapour-liquid, VLE and LLE), excess molar functions, enthalpies (E m H), isochoric internal energies (E Vm U), isobaric heat capacities (E pm C) and volumes (E m V), and the Kirkwood's correlation factor. Due to proximity effects between the phenyl and the CN groups, dipolar interactions between molecules of aromatic nitriles are stronger than those between molecules of isomeric linear nitriles. Dipolar interactions become weaker in the order: 3-phenylpropionitrile > phenylacetonitrile > benzonitrile. Benzonitrile + aromatic hydrocarbon mixtures are characterized by dispersive interactions and structural effects. The latter are more important in systems with phenylacetonitrile. Structural effects are also present in benzonitrile + n-alkane, or + 1-alkanol + mixtures. The systems mentioned above have been studied using DISQUAC. Interaction parameters for contacts where the CN group in The E m V curves of solutions with longer 1-alkanols are more poorly described, which has been explained in terms of the existence of structural effects.

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Section: Disquac Interaction Parametersmentioning

confidence: 99%

Thermodynamics of mixtures containing aromatic nitriles

González¹,

Alonso-Tristán

Hevia³

et al. 2018

The Journal of Chemical Thermodynamics

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“…Order parameter (T c À T) < 1 K (T c À T) < 1 K (T c À T) < 10 K values of D, q c , B, and B 1 from tables 9 and 7, the values of q 1 , q 2 , and q d were calculated by equations (13) to (15). The results are shown in figures 1 and 2 as solid lines, which are in good agreement with the experimental ones.…”

Section: Resultsmentioning

confidence: 99%

“…As a part of the continuous investigations on the critical behavior of the binary mixtures of (benzonitrile + n-alkanes) [10][11][12][13][14][15], in this paper, we report the measurements of the liquid + liquid coexistence curves for binary solutions of benzonitrile + n-pentadecane and benzonitrile + n-heptadecane. Detailed analysis of the asymmetry of the coexistence curves and discussion about the validity of the complete scaling theory are presented.…”

Section: Introductionmentioning

confidence: 99%

The liquid–liquid coexistence curves of {benzonitrile+n-pentadecane} and {benzonitrile+n-heptadecane} in the critical region

Chen

Bai

Yin

et al. 2012

The Journal of Chemical Thermodynamics

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“…Lines are only for the aid of the eye. For experimental data, see aniline, , phenol, ,, nitrobenzene, − benzonitrile, ,− and benzaldehyde …”

Section: Discussionmentioning

confidence: 99%

Liquid–Liquid Equilibria for 2-Phenylethan-1-ol + Alkane Systems

Alonso-Tristán¹,

González

Fuenté

et al. 2018

J. Chem. Eng. Data

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The liquid−liquid equilibrium (LLE) curves for 2-phenylethan-1-ol (2-phenylethanol, 2PhEtOH) + octane, + decane, + dodecane, + tetradecane or + 2,2,4-trimethylpentane have been determined by a method of turbidimetry using a laser scattering technique. Experimental results reveal that the systems are characterized by an upper critical solution temperature (UCST), which increases linearly with the number of C atoms of the n-alkane. In addition, the LLE curves have a rather horizontal top and become skewed to higher mole fractions of the n-alkane, when its size increases. For a given n-alkane, UCST decreases as follows: phenol > phenylmethanol > 2-PhEtOH, indicating that dipolar interactions decrease in the same sequence. This has been ascribed to a weakening in the same order of the proximity effects between the phenyl and OH groups of the aromatic alkanols. DISQUAC interaction parameters for OH/aliphatic and OH/aromatic contacts in the investigated systems are reported. Phenol, or phenylmethanol or 2-PhEtOH, + n-alkane mixtures only differ by the first dispersive Gibbs energy interaction parameter for the (OH/aliphatic) contact. 52 2.1. Materials. Information on source, purity, water 53 contents, determined by the Karl Fischer method, and density 54 (ρ) of the pure chemicals employed along this investigation is 55 t1 collected in Table 1. All the chemicals were used as received. 56 Density values were obtained from a vibrating-tube densimeter 57 and a sound analyzer, Anton Paar model DSA-5000. The 58 repeatability of the ρ measurements is 5 × 10 −3 kg•m −3 , while 59 their relative standard uncertainty is 0.001. Inspection of Table 60 1 shows that there is a good agreement between our density 61 results and those taken from the literature. 62 2.2. Apparatus and Procedure. Mixtures were prepared 63 by mass in small Pyrex tubes of the following dimensions: 0.009 64 m i.d. and about 0.04 m length (free volume of the ampule 65 ≈1.17 × 10 −6 m 3). The tubes were immediately sealed by 66 capping at 0.1 MPa and 298.15 K. Weights were measured 67 using an analytical balance Sartorius NSU125p (weighing 68 accuracy 10 −8 kg). Mole fractions were calculated on the basis 69 of the relative atomic mass Table of 2015 issued by the

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Critical behavior of binary mixture of {x C6H5CN + (1 −x) CH3(CH2)12CH3}: Measurements of coexistence curves, turbidity, and heat capacity

Cited by 22 publications

References 48 publications

Thermodynamics of mixtures containing aromatic nitriles

Thermodynamics of mixtures containing aromatic nitriles

The liquid–liquid coexistence curves of {benzonitrile+n-pentadecane} and {benzonitrile+n-heptadecane} in the critical region

Liquid–Liquid Equilibria for 2-Phenylethan-1-ol + Alkane Systems

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