Polymorphic Control of α and β dl‐Methionine through Swift Cooling Crystallization Process,Crystal Research and Technology

当前位置： X-MOL 学术 › Cryst. Res. Technol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Polymorphic Control of α and β dl‐Methionine through Swift Cooling Crystallization Process
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2021-03-24 , DOI: 10.1002/crat.202000208
Manivel Suresh ₁ , Karuppannan Srinivasan ₁

Affiliation

Polymorphic control and crystal nucleation of α and β polymorphs of dl‐methionine, an essential amino‐acid, is attained from saturated aqueous solution through swift cooling crystallization process by generating wide range of supersaturation (0.02 < σ < 2.19) in the temperature range of 323–274 K. The type of nucleation is very much supersaturation dependent: while lower supersaturation range (0.02 < σ < 0.08) prefers the stable β form, higher supersaturation range (1.20 < σ < 2.19) yields metastable α form. In situ optical microscopy and X‐ray diffraction analyses confirm the morphological and structural distinction of the grown polymorphs.

中文翻译：

快速冷却结晶过程对α和βdl-蛋氨酸的多态控制

饱和水溶液通过快速冷却结晶过程，通过在温度范围内产生宽范围的过饱和度（0.02 < σ <2.19），从饱和水溶液中获得了必需蛋氨酸dl-蛋氨酸的α和β多晶型物的多态性控制和晶核。 323–274K。成核的类型很大程度上取决于过饱和度：虽然较低的过饱和度范围（0.02 < σ <0.08）倾向于稳定的β形式，但是较高的过饱和度范围（1.20 < σ <2.19）产生亚稳态α形式。原位光学显微镜和X射线衍射分析证实了所生长的多晶型物在形态和结构上的区别。

更新日期：2021-05-06

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11