苯乙酸水溶液的络合萃取分离研究

Extraction of Phenyl Acetic Acid with Trioctylamine based on Chemical Complexation

以三辛胺为络合剂、甲苯为稀释剂对苯乙酸水溶液进行络合萃取研究,主要探讨了萃取过程中的平衡常数、盐效应、热效应及光谱学行为.结果表明,萃取过程存在离子缔合成盐和氢键缔合溶剂化两种机理,同时无机阴离子对苯乙酸的络合萃取具有竞争作用,基于可逆化学反应的络合萃取对苯乙酸溶液具有高效性和高选择性.

Phenyl acetic acid in water was extracted based on chen, ical complexion and the extraction mechanism of phenyl acetic acid was studied. The paper also discussed certain factors that influence the extracting efficiency. The resuhs showed that hoth, I,yd,＇ogen bonding and ionization existed in the complex formed by TOA and phenyl acetic acid, and ion-pair association was weakened by ix,organic anion competition. This technique was of characteristic of high capacity and high selectivity.