...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Solubility Equilibria and Crystallographic Characterization of the L?Threonine/L-allo-Threonine System, Part 1: Solubility Equilibria in the Threonine Diastereomeric System
【24h】

Solubility Equilibria and Crystallographic Characterization of the L?Threonine/L-allo-Threonine System, Part 1: Solubility Equilibria in the Threonine Diastereomeric System

机译：苏氨酸/ L-苏氨酸系统的溶解度平衡和晶体学表征，第1部分：苏氨酸非对映体系统中的溶解度平衡

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Solubility equilibria of threonine, allo-threonine, and their mixtures in water were measured in a temperature range between 10 and 80 °C. In comparison with allo-threonine, the threonine species exhibit higher solubility in water. The solubility phase diagram of the ternary system L-allo-threonine/Lthreonine/ water shows maximum solubilities at L-threonine contents in the range of 56?66%, while the tie lines clearly indicate the presence of solid solutions. X-ray powder diffraction (XRPD) studies of various mixtures prove complete miscibility of L-allo-threonine and L-threonine molecules in the solid state, based on characteristic features of measured diffraction patterns and calculated lattice parameters. Applying the solubility data determined, fractional crystallization is suggested as an effective purification method of mixtures below or above the alyotropic composition.
机译：苏氨酸，别苏氨酸及其混合物在水中的溶解平衡是在10至80°C的温度范围内测量的。与别苏氨酸相比，苏氨酸在水中的溶解度更高。三元体系L-苏氨酸/ L苏氨酸/水的溶解度相图显示L-苏氨酸含量在56-66％范围内具有最大溶解度，而连接线清楚地表明存在固溶体。各种混合物的X射线粉末衍射（XRPD）研究证明，根据实测衍射图和计算出的晶格参数的特征，L-苏氨酸和L-苏氨酸分子在固态下具有完全的混溶性。应用确定的溶解度数据，建议分级结晶是将混合物制成低于或高于各向异性混合物的有效方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号