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Chemcial Industry and Engineering 2023, Vol. 40 Issue (5) :40-53    DOI: 10.13353/j.issn.1004.9533.20210830
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Separation and refining method based on sublimation crystallization process
SU Xin1, SHANG Zeren1, YU Changyou2, GAO Ye2, HE Bingbing3, LI Kangli2, CHEN Mingyang1,2, GONG Junbo1,2,4
1. College of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Zhejiang Shaoxing Research Institute of Tianjin University, Zhejiang Shaoxing 31200, China;
3. State Key Laboratory of Efficient Utilization of Middle and Low Grade Phosphate Ore and Its Associated Resources, Guiyang 550500, China;
4. Chemistry and Chemical Engineering Guangdong Laboratory, Guangdong Shantou 515031, China

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Abstract Sublimation crystallization is a solvent-free crystallization method and it involves a composite process of sublimation and desublimation, which means it has a direct phase transition process of solid-gas-solid. It has great advantages in the separation and refinement of high purity products, the screening of new polymorphs and the preparation of high-quality single crystals. However, there are still great challenges in its theoretical research, industrial amplification, and equipment standardization due to the complex variability of gases. This article summarized sublimation crystallization mechanisms and its applications in polymorph control, co-crystal design, separation and purification of crystal product. Several typical sublimation equipment were introduced. Moreover, some new ideas about deepening the mechanism and perfecting the model are proposed, and the key problems and development directions of sublimation crystallization in the application of efficient separation and precise control of crystallization process are discussed.
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Articles by authors
SU Xin
SHANG Zeren
YU Changyou
GAO Ye
HE Bingbing
LI Kangli
CHEN Mingyang
GONG Junbo
Keywordssublimation crystallization   desublimation   mechanism   separation   refine   sublimation devices     
Received 2021-10-16;
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SU Xin, SHANG Zeren, YU Changyou, GAO Ye, HE Bingbing, LI Kangli, CHEN Mingyang, GONG Junbo.Separation and refining method based on sublimation crystallization process[J]  Chemcial Industry and Engineering, 2023,V40(5): 40-53
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