Separation of p-cresol from its mixture with 2,6-xylenol by adductive crystallization

Jadhav, Vivek K.; Chivate, M.R.; Tavare, Narayan S.

doi:10.1021/je00002a026

Cited by 12 publications

(8 citation statements)

References 10 publications

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“…The experimental data of binary pairs of tert-butyl alcohol + 2,6-xylenol and m-cresol + 2,6-xylenol exhibited only one eutectic point, whereas the m-cresol + tertbutyl alcohol mixture exhibited two eutectic and one congruent points. It should be mentioned that the present experiments obtained different SLE data of tertbutyl alcohol + 2,6-xylenol from those of Jadhav and Chivate 6 and different SLE data of the m-cresol + tertbutyl alcohol mixture from those of Chivate and Shah, 4 respectively.…”

Section: Introductioncontrasting

confidence: 49%

“…It is obvious that discrepancy exists between our data and those of Jadhav and Chivate. 6 It was observed that near the melting point Jadhav's experimental data were much more scattered than ours.…”

Section: Resultsmentioning

confidence: 49%

“…Crystallization is an important separation method for mixtures of close-boiling components, especially when a pure product is desired. Two crystallization processes, dissociation extractive and adductive, had been reported in the literature, for example, Chivate and Shah, 4 Gaikar et al, 5 Jadhav and Chivate, 6 and Lee and Lien. 7 The selection either of the dissociation extractive or of the adductive crystallization process is dependent on the solid-liquid equilibrium behavior of the mixtures.…”

Section: Introductionmentioning

confidence: 99%

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Using tert-Butyl Alcohol as an Adductive Agent for Separation of an m-Cresol and 2,6-Xylenol Mixture

Lee

Lin

Kao

2000

Ind. Eng. Chem. Res.

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The solid−liquid equilibrium (SLE) phase boundaries of the ternary mixture of m-cresol, 2,6-xylenol, and tert-butyl alcohol and those of the three constituent binary mixtures were experimentally determined by means of the solid-disappearance method. Each of the m-cresol + 2,6-xylenol and tert-butyl alcohol + 2,6-xylenol mixtures exhibits one eutectic point, whereas the m-cresol + tert-butyl alcohol mixture exhibits one congruent point and two eutectic points. The approach proposed by Ott and Goates (J. Chem. Thermodyn. 1983, 15, 267) was used to represent the melting point temperatures as functions of the mole fraction of one of the components. The formulation developed by Stoicos and Eckert (Chem. Eng. Sci. 1987, 42, 1137) for SLE calculations was used with the NRTL activity coefficient model of Renon and Prausnitz (AIChE J. 1968, 14, 135) to correlate the experimental data for the binary systems. On the basis of the information presented in the phase diagram, which shows all the eutectic and congruent points and the liquidus isotherms for the ternary system, two conceptual possible processes involving the use of tert-butyl alcohol as the adductive agent for separating a mixture of m-cresol and 2,6-xylenol are proposed.

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Section: Introductioncontrasting

confidence: 49%

Section: Resultsmentioning

confidence: 49%

Section: Introductionmentioning

confidence: 99%

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Using tert-Butyl Alcohol as an Adductive Agent for Separation of an m-Cresol and 2,6-Xylenol Mixture

Lee

Lin

Kao

2000

Ind. Eng. Chem. Res.

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“…Summing up the mole fractions leads to the two equations " Activity coefficients and ideal solubilities for benzene as a solute. x* +x* = l (10) it is possible to minimize the following objective function: (11) For an ideal solid phase ( * = 2* = 1) the problem reduces to the minimization of with two parameters (Ai, A2), using composition data from the liquidus curve. Using the experimental data of Sediawan et al ( 1), with liquid-phase activity coefficients derived from the UNIQUAC and Wilson equations, the interaction parameters were fitted by this optimization technique.…”

mentioning

confidence: 99%

Solid-liquid phase equilibria of binary and ternary mixtures of benzene and polynuclear aromatic compounds

Domańska¹,

Groves²,

McLaughlin³

1993

J. Chem. Eng. Data

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“…A company in Finland, Cultor, separates xylose and arabinose via liquid chromatography, but no technical data is available on this. Jadhav et al (1991;1992) published two papers on the separation of phenols by adductive crystallization. The first one describes the separation of p-cresol from 2,6-xylenol with tertbutyl alcohol as solvent.…”

Section: Base-catalyzed Depolymerization Of Lignin: Separation Of Monmentioning

confidence: 99%

Base‐Catalyzed Depolymerization of Lignin: Separation of Monomers

2007

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Dans le cadre de nos recherches sur la fractionation de biomasse lignocellulosique et la valorisation des fractions constitutives spécifiques, nous avons mis au point une stratégie pour la séparation de 12 monomères à valeur ajoutée produits lors de la dépolymérisation catalytique basée sur l'hydrolyse de la lignine de pins Aspen explosée à la vapeur. Cette stratégie de séparation combine une extraction liquide-liquide (ELL), suivie par une distillation sous vide, une chromatographie liquide (CL) et une cristallisation. La ELL, la distillation sous vide et la CL flash ont été testées de façon expérimentale. La distillation sous vide discontinue produit jusqu'à 4 fractions. La simulation de procédé confirme qu'une série de 4 colonnes de distillation sous vide pourrait produire 5 courants de monomères, dont 3 nécessitent davantage de chromatographie et de cristallisation pour la purification.

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Separation of p-cresol from its mixture with 2,6-xylenol by adductive crystallization

Cited by 12 publications

References 10 publications

Using tert-Butyl Alcohol as an Adductive Agent for Separation of an m-Cresol and 2,6-Xylenol Mixture

Using tert-Butyl Alcohol as an Adductive Agent for Separation of an m-Cresol and 2,6-Xylenol Mixture

Solid-liquid phase equilibria of binary and ternary mixtures of benzene and polynuclear aromatic compounds

Base‐Catalyzed Depolymerization of Lignin: Separation of Monomers

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