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Overview of Secondary Nucleation: From Fundamentals to Application
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-09-20 , DOI: 10.1021/acs.iecr.0c03304
Shijie Xu 1 , Zhongbi Hou 1 , Xiaoyu Chuai 1 , Yanfei Wang 1
Affiliation  

Secondary nucleation can bring the crystallization process into a more easily controlled state, and it is playing an important role in controlling crystal size distribution, polymorphism, and chirality of the crystal products, no matter whether in a batch or continuous crystallizer. Therefore, in this review, we revisit the research of secondary nucleation in the past 30 years to understand the fundamentals and application of secondary nucleation. First, we summarize the sources of secondary nuclei, that is, how secondary nucleation occurs. Then, we discuss the secondary nucleation threshold from the perspective of the metastable zone widths which are associated with the nucleation mechanism. Furthermore, we discuss how to employ secondary nucleation to regulate the properties of crystalline products (particle size distribution, crystal polymorphism, chirality, etc.). More importantly, we also discuss how polymorphism and chirality can act as a probe to explore the origin of secondary nucleation. Finally, we give conclusions and outlooks, mainly on the molecular nucleation mechanism and crystal growth dead zone of the current topic of secondary nucleation.

中文翻译:

二次成核概述:从基础到应用

二次成核可使结晶过程进入更容易控制的状态,并且无论在间歇式结晶器还是连续式结晶器中,它都在控制晶体尺寸分布,多晶型和手性方面起着重要作用。因此,在这篇综述中,我们回顾了过去30年的二次成核研究,以了解二次成核的基本原理和应用。首先,我们总结了次级核的来源,即次级核如何发生。然后,我们从与成核机制相关的亚稳区宽度的角度讨论了次级成核阈值。此外,我们讨论了如何利用二次成核来调节晶体产物的性质(粒度分布,晶体多态性,手性等)。更重要的是,我们还将讨论多态性和手性如何充当探索次生成核起源的探针。最后,我们给出结论和展望,主要是关于当前二次成核的分子成核机理和晶体生长死区。
更新日期:2020-10-15
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