溶剂对维生素C单晶生长动力学的影响  

EFFECT OF SOLVENTS ON GROWTH KINETICS OF VITAMIN C SINGLE CRYSTALS

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1176-1178,共3页CIESC Journal

基　　金：中国科学院王宽诚基金资助项目

摘　　要：The experiments of single crystals growth for vitamin C were carried out on growth rates of different orientations (,and ).Under various temperatures and supersaturations, the directional growth rates were measured The kinetic parameters were regressed by the least square method and verified by significance test In aqueous and ethanol aqueous solution, the kinetic parameters changed greatly, and the controlling step of growth differed from each other So crystals in aqueous solution are often in rod form,while always in plate form in water ethanol The effects of solvent on directional growth were analyzed according to steric effect of solvent molecules and hydrogen bond interaction at solution crystalThe experiments of single crystals growth for vitamin C were carried out on growth rates of different orientations (,and ).Under various temperatures and supersaturations, the directional growth rates were measured The kinetic parameters were regressed by the least square method and verified by significance test In aqueous and ethanol aqueous solution, the kinetic parameters changed greatly, and the controlling step of growth differed from each other So crystals in aqueous solution are often in rod form,while always in plate form in water ethanol The effects of solvent on directional growth were analyzed according to steric effect of solvent molecules and hydrogen bond interaction at solution crystal interface

关 键 词：单晶 生长动力学 维生素C 溶剂 

分 类 号：TQ026.5[化学工程]