化工学报 ›› 2003, Vol. 54 ›› Issue (8): 1173-1175.

• 生物化学工程、制药、食品和天然产物加工 • 上一篇    下一篇

流动溶液中维生素C单晶生长动力学

陈慧萍; 陈丽萍; 陈勇; 邵曼君   

  1. 中国科学院过程工程研究所,北京 100080;北京理工大学化工与环境学院,北京 100081;华东交通大学基础科学学院,江西 南昌 330013
  • 出版日期:2003-08-25 发布日期:2003-08-25

GROWTH KINETICS OF VITAMIN C SINGLE CRYSTALS IN FLOWING SOLUTION

CHEN Huiping;CHEN Liping;CHEN Yong;SHAO Manjun   

  • Online:2003-08-25 Published:2003-08-25

关键词:

正交试验法, 流动溶液, 单晶生长动力学, 维生素C

Abstract: The growth of vitamin C single crystals was studied by direct observation. In flowing solution, the linear growth rates of three orientations ([010], [001], [100]) were measured for vitamin C-water system. The experiments were designed as orthogonal test to investigate the effect of various factors. Comparing with temperature and velocity, supersaturation is the most important factor. And the relations between growth and supersaturation were different with crystal directions, which obviously show anisotropy. The order of magnitude of G[010], G[001], G[100] and their dependency on supersaturation (g[010],g[001], g[100]) were in good agreement with analysis of maximum difference. The effect of solution diffusion could be neglected and crystal growth was controlled by surface reaction. According to the growth models, the growth mechanism was discussed.

Key words:

正交试验法, 流动溶液, 单晶生长动力学, 维生素C