摘要
1,10-双(1’-苯基-3’-甲基-5’-氧代吡唑-4’-基)癸二酮-[1,10](以下简称H_2A)是近年来开发的一个新型螯合萃取剂。蒋次清等研究了本文标题化合物的同系物1,9-双(1’-苯基-3’-甲基-5’-氧代吡唑-4’-基)壬二酮-[1,9]对铁(Ⅲ)、钴(Ⅱ)和镍(Ⅱ)的萃取行为,发现它能将铁(Ⅲ)与钴(Ⅱ)和镍(Ⅱ)分离,但不能实现钴(Ⅱ)和镍(Ⅱ)的分离。本文研究表明,当上述化合物的主碳链中C从9个增加到10个后,在适当条件下能实现铁(Ⅲ)、钴(Ⅱ)和锦(Ⅱ)间的相互分离。
The extraction behavior of iron(Ⅲ), cobalt(Ⅰ) and nickle(Ⅰ) by title compound (abbre-viated as H_2A) in chloroform, has been studied. In the solution of sodium nitrate and HAc--NaAc, H_2A extracts iron(Ⅲ) and cobalt(Ⅰ), but doesn't extract nickle(Ⅰ). The composi-tions of the extracted complexes were determined as Fe_2A_3 and CoA (H_2A) respectively. TheirpH1/2 values were found to be 2.6 and 4.8 and their extraction equilibrium constants were1.31 and - 5.12 respectively. The title extractant promised to fulfil the separation betweeniron(Ⅲ), cobalt(Ⅰ) and nickle(Ⅰ).
出处
《应用化学》
CAS
CSCD
北大核心
1991年第6期92-94,共3页
Chinese Journal of Applied Chemistry
基金
云南省应用基础研究基金
关键词
铁
钴
镍
萃取分离
螯合萃取剂
iron
cobalt
nickle
extraction separation
chelating extractant
