Determination of crystalline thermodynamics and behavior of anthracene in different solvents |
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| Authors: | Cui‐Ping Ye Xiao‐Xiao Ding Wen‐Ying Li Hai Mu Wei Wang Jie Feng |
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| Affiliation: | 1. Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan 030024, P.R. China;2. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, P.R. China |
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| Abstract: | 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 °C 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. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2160–2167, 2018 |
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| Keywords: | anthracene thermodynamics solvent crystallization carbazole solid solution |
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