使用X射线计算机断层扫描4D跟踪破碎晶体的生长及其对杂质结合的影响
S A Schiele1, T Haider2, H Briesen2
1Chair of Process Systems Engineering, Technical University of Munich, Gregor-Mendel-Str. 4, 85354, Freising, Germany. simon.a.schiele@tum.de.
Scientific reports
|September 25, 2024
概括
破碎的晶体在受损区域愈合和生长得更快,最终变得光滑. 这种晶体生长过程可以捕获杂质,影响制药和化学制造业.
科学领域:
- 结晶科学是结晶的科学.
- 材料科学是一种材料科学.
- 化学工程是化学工程的组成部分.
背景情况:
- 结晶对于工业中的分离和净化至关重要.
- 机械应力可以在加工过程中破碎晶体.
- 晶体完整性会影响产品的纯度和过程动力学.
研究的目的:
- 为了研究破碎晶体的三维生长.
- 了解晶体形状愈合的机制.
- 评估晶体损坏对纯度和动力学的影响.
主要方法:
- 利用X射线微型计算机断层扫描进行现场观察.
- 分析了受损和面状区域的晶体生长.
- 量化了晶体形状和表面形态的演变.
主要成果:
- 损坏的晶体区域与面积较大的区域相比,表现出加速的增长率.
- 晶体表面最初在愈合过程中发展出微观形面.
- 完整的形状愈合导致凸起的晶体表面.
- 在形状愈合过程中,包含物被纳入晶体.
结论:
- 晶体损伤显著影响生长动力学和形态学.
- 形状愈合可能导致杂质被困,损害产品的纯度.
- 这些发现对于优化工业结晶过程至关重要.
- 了解非面和形生长是控制结晶结果的关键.
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