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Can the sublimation purification process still be impure? 


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The sublimation purification process can still be impure. The presence of impurities in the sublimation process can be caused by factors such as the design of the purification apparatus and the deposition of materials on the tube wall during sublimation . However, there are methods to improve the purity of the sublimation process. One approach is to use a multilayer baffle vacuum pump protection device, which prevents the deposition of organic material dust on the vacuum pump and improves the efficiency of the equipment . Another method involves uniformly heating the substance to be treated in order to prevent the formation of impurities and improve the purity and yield of the sublimation-purified substance . Additionally, static vacuum sublimation can be used to help purify synthesized materials, removing impurities and resulting in a higher purity compound . Therefore, while the sublimation purification process can still be impure, there are techniques available to enhance its purity.

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Papers (5)Insight
No, the sublimation process successfully removed impurities from the synthesized LiZnAs material, resulting in a higher purity ternary compound.
Yes, the sublimation purification process can still be impure if there is deposition on the tube wall.
No, the sublimation purification process described in the paper aims to prevent impurities and improve the purity and yield of the substance being treated.
No, the sublimation purification process removes impurities from organic substances to extract pure organic substances.
Patent
Liu Yang, Yan Linli, Liu Changfan, Ren Xueyan 
24 Jul 2018
1 Citations
No, the sublimation purification process is designed to remove impurities and improve the efficiency and lifespan of the equipment.

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