Crystal Structure and Crystallization Growth Kinetics of Cyclohexanecarboxylic Acid

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Abstract

High quality single crystals of cyclohexanecarboxylic acid (CCA) were obtained by melt crystallization. The crystal structure of CCA crystal determined by single-crystal X-ray diffraction is first reported here. It crystalizes in the monoclinic system, space group P2₁/c with cell parameters a=1.19113 nm, b=1.07421 nm, c=1.10733 nm, and β=94.72°. The crystal habit of CCA crystal was predicted based on the crystal structure using Material Studio. The nucleation temperatures and induction period under various cooling rates were measured by DSC. Furthermore, the crystal growth of CCA crystal was determined online using hot-stage microscopy. The growth rates of main appeared crystal faces were measured under different temperature, indicating exponential dependency of growth kinetics on supercooling degree.

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	Articles by authors
	Yang Lijing
	Xie Chuang

Keywords： cyclohexanecarboxylic acid； crystal structure； crystal habit predicting； crystallization growth kinetics

Received 2016-03-17;

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Yang Lijing, Xie Chuang.Crystal Structure and Crystallization Growth Kinetics of Cyclohexanecarboxylic Acid[J] Chemcial Industry and Engineering, 2018,V35(3): 74-78

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