Mathematical module for countercurrently fractional chiral extraction and its VB simulation
来源期刊:中国有色金属学报(英文版)2006年第6期
论文作者:唐课文 黄可龙 易健民 张国丽
文章页码:1455 - 1459
Key words:fractional chiral extraction; mathematical modules; VB simulation
Abstract: Based on chemical thermodynamics and mass balance, countercurrently fractional chiral extraction by hollow fiber membrane was investigated. The mathematical modules for the relation of chiral extraction yield and product optical purity with number of transfer units by chiral extraction with hollow fiber membrane were established, and the modules were simulated by visual basic(VB) proceduce. The results show that, the difference in free energy between two diastereomeric complexes formed by R- and S-enantiomer with chiral selector, -Δ(ΔG), is the force of separation of enantiomers. It is necessary to separate enantiomers, where one of the extraction factors is above 1, and the other is below 1. Under certain phase ratio, chiral separation depends on separation factor and number of transfer units. The experimental result is in agreement with the theoretical value.
基金信息:the National Natural Science Foundation of China
the China Postdoctoral Science Foundation