流动溶液中维生素C单晶生长动力学  

GROWTH KINETICS OF VITAMIN C SINGLE CRYSTALS IN FLOWING SOLUTION

作　　者：陈慧萍[1] 陈丽萍[2] 陈勇[1] 邵曼君[1] 

机构地区：[1]中国科学院过程工程研究所 [2]华东交通大学基础科学学院,江西南昌330013

出　　处：《化工学报》2003年第8期1173-1175,共3页CIESC Journal

基　　金：中国科学院王宽诚基金资助项目

摘　　要：The growth of vitamin C single crystals was studied by direct observation In flowing solution, the linear growth rates of three orientations (, , ) 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 , G , G and their dependency on supersaturation ( g , g , g ) 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 wasThe growth of vitamin C single crystals was studied by direct observation In flowing solution, the linear growth rates of three orientations (, , ) 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 , G , G and their dependency on supersaturation ( g , g , g ) 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

关 键 词：正交试验法 流动溶液 单晶生长动力学 维生素C 

分 类 号：TQ026.5[化学工程]