Formation of Solid Solution and Ternary Phase Diagrams of Anthracene and Phenanthrene in Different Organic Solvents

Ding, Suping; Yin, Qiuxiang; Du, Wei; Sun, Xiaowei; Hou, Baohong; Zhang, Meijing; Wang, Zhao

doi:10.1021/je501121v

Cited by 19 publications

(11 citation statements)

References 29 publications

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“…Compared with other techniques, it can operate in a wider range of temperatures from -50 to 200°C, dispenses with extra solvents, saves energy, and generates high-purity products. As multiple-phase diagrams provide significant thermodynamic data during crystallization, they are acknowledged to be useful for purifying sole components from organic mixtures [41]. Furthermore, protein crystallization tends to be productive in theoretical studies, so do polymers in the polymer material field.…”

Section: Othersmentioning

confidence: 99%

Industrial Crystallization in China

Gong

Wang

et al. 2016

Chem Eng & Technol

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The latest developments of industrial crystallization in China are reviewed. This includes the introduction of representative scientists and institutions promoting the progress of Chinese industrial crystallization. Additionally, primary application fields related to industrial crystallization are outlined to give an overview of the current research trends in China. National and international industrial crystallization meetings held in China are also presented. Finally, the expectations for the future research activities in the field of industrial crystallization in China are briefly described.

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Section: Othersmentioning

confidence: 99%

Industrial Crystallization in China

Gong

Wang

et al. 2016

Chem Eng & Technol

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“…Examples of systematic studies of binary and ternary phase diagrams have been given in the literature from the research groups of Grant and Klussmann. 4,5 According to the characteristics of the phase diagrams, binary mixtures can be divided into three categories, including a eutectic-forming system, 6,7 a solid solution system, 7,8 and a new compound/phase-forming (e.g., solvate, 9,10 oiling-out, 11 and other situation 12−14 ) system.…”

Section: Introductionmentioning

confidence: 99%

“…Thereinto, the relevant phase diagrams for crystallization separation and purification of binary mixture can be classified to a solvent-free binary melt phase diagram which describes the melting behavior of the mixture and a ternary solubility phase diagram which depicts the solubility behavior of each compound in a specific solvent. Examples of systematic studies of binary and ternary phase diagrams have been given in the literature from the research groups of Grant and Klussmann. , According to the characteristics of the phase diagrams, binary mixtures can be divided into three categories, including a eutectic-forming system, , a solid solution system, , and a new compound/phase-forming (e.g., solvate, , oiling-out, and other situation − ) system.…”

Section: Introductionmentioning

confidence: 99%

Novel Technology for Separation of Binary Eutectic-Forming Mixture by Cocrystallization into Different Sizes Combined with Particle Size Fraction

Zhang

Huang

Zhou

et al. 2019

Ind. Eng. Chem. Res.

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Separation of a eutectic-forming mixture is a challenge in the manufacturing process of fine chemical products. In this paper, a novel separation technology for a binary eutectic mixture by solution crystallization combined with particle size fraction was proposed. A eutectic-forming mixture of fluorene and fluorenone was used as the model compounds. On the basis of the determined fluorene–fluorenone–cyclohexane ternary solid–liquid equilibrium phase diagrams, isothermal and polythermal crystallization experiments of a fluorene–fluorenone eutectic mixture with different concentrations were performed in cyclohexane. Results showed that two product-rich parts (fluorene-rich part and fluorenone-rich part) and a mixture part were obtained at the same time under isothermal and polythermal mode by sieve fraction. Furthermore, changing the initial composition slightly from the eutectic point could improve the polythermal crystallization process significantly and achieve a higher yield. In addition, an enhanced online removal separation process was employed after crystallization, and it attained two products of fluorene and fluorenone with a purity of 90.17 and 95.30 wt %, respectively. To date, this has been the first experiment that attempted to separate a eutectic system from the view of particles size and purity.

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“…Impurity is also a very important factor that affects the degree of supersaturation, the MSZW, the crystallization kinetics, the crystal growth by changing the crystal‐solution interface characteristic of the adsorption layer, and the morphology including habit and size distribution of the final crystallization products during the solvent crystallization . Anthracene and phenathrene can form solid solution during solvent crystallization . If the solid solution of anthracene and carbazole can be formed into the solution too, it would lead to the difficulty of the isolation and purification of the anthracene.…”

Section: Introductionmentioning

confidence: 99%

“…If the solid solution of anthracene and carbazole can be formed into the solution too, it would lead to the difficulty of the isolation and purification of the anthracene. Calorimetric and X‐ray techniques were commonly used for phase diagram and solid solution determination. However, most studies have focused on the solvent‐free melt crystallization.…”

Section: Introductionmentioning

confidence: 99%

Determination of crystalline thermodynamics and behavior of anthracene in different solvents

Ding

Nimmo

et al. 2018

AIChE Journal

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To screen suitable solvents for anthracene crystallization, the solubilities of anthracene and metastable zone width were determined in four different solvents, N,N-dimethyl formamide (DMF), xylene, tetrachloroethylene, and diethylene glycol dimethyl ether from 30 to 80 8C at atmospheric pressure using a self-made crystallizer. The cooling modes, solvents, and the effects of carbazole on the solvent crystallization process of anthracene were also investigated. The composition of mother liquors and solid products were measured by gas chromatography; the solids were analyzed by scanning electron microscope, X-ray diffractometer, differential scanning calorimetry, granulometer, and fluorescence spectrometer. The results showed that a uniform anthracene crystal was obtained when using DMF under the forced circulation cooling mode. Solid solution of anthracene and carbazole was initially detected in solvent crystallization. The existence of carbazole in solution has an obvious effect on the crystal morphology of anthracene, to some extent, is beneficial to the crystal growth of anthracene.The solvent cooling crystallization of anthracene with carbazole as the impurity was investigated with DMF as the solvent. Here, the adding ratios of carbazole varied from 1 to 30 Figure 3. Metastable zone of anthracene in DMF, TCE, xylene, and DGDE.Figure 9. Fluorescence spectrum of crystals of anthracene, carbazole, mechanical mixture, and cocrystals with the excitation wavelength of 356 nm.

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Formation of Solid Solution and Ternary Phase Diagrams of Anthracene and Phenanthrene in Different Organic Solvents

Cited by 19 publications

References 29 publications

Industrial Crystallization in China

Industrial Crystallization in China

Novel Technology for Separation of Binary Eutectic-Forming Mixture by Cocrystallization into Different Sizes Combined with Particle Size Fraction

Determination of crystalline thermodynamics and behavior of anthracene in different solvents

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