文献类型：期刊文献

中文题名：溶剂萃取法提取羟基乙酸

英文题名：Solvent Extraction of Hydroxyacetic Acid

作者：张平[1];蔡水洪[1];张秋华[1];骆赞椿[1]

机构：[1]华东理工大学化学工程系

年份：1994

卷号：20

期号：2

起止页码：148

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;EI(收录号：1994121437900);Scopus;CSCD:【CSCD2011_2012】；

基金：上海市自然科学基金

语种：中文

中文关键词：羟基乙酸;萃取;三烷基氧膦

外文关键词：hydroxyacetic acid;extraction;trialkyl phosphine oxid(TRPO);stripping;hydroxyacetonitrile

摘要：以三烷基氧膦（ＴＲＰＯ）为萃取剂，磺化煤油为稀释剂，考察了文题的影响因素。确定了萃取过程的最佳工艺条件：萃取剂组成５０％ＴＲＰＯ－５０％磺化煤油；室温；初始水相的ｐＨ值１～３。负载有机相中的羟基乙酸可用去离子水反萃，９０℃下一次反萃率可达７３．４％。依实验确定的萃取及反萃平衡等温线，可得到萃取及反萃的理论级数分别为５和７级。ＴＲＰＯ萃取羟基乙酸为一放热反应，萃取反应的热效应为－１４．８ｋＪ／ｍｏｌ。
The present paper studies the extraction of hydroxyacetic acid from hydrolyticsolulion of hydroacetonitrile by Trialkyl Phosphine Oxide (TRPO).Process varibles in-fluencing the distribution coefficient of hydroacetic acid are studied with separating funnel.The optimum extrection conditions are as follows: 50% TRPO-50% kerosene, pH=1～3 androom tempeiature. Deionized Water is adopted as stripping agent of hydroxyacetic acid fromthe loaded organic phase and percentage stripping for one stage reaches 73.4% at 90℃. Extraction and stripping numbers of theoretic stages are 5 and 7 respectively according toisotherms which are attained by experiments.The entropy change in extracting complexreaction is-14.8 kJ/mol.