摘要
本文研究了仲碳伯胺N_(1923)与中性磷萃取剂的正庚烷溶液,从盐酸介质中对Zn(Ⅱ)的协同萃取。用斜率法及等摩尔系列法确定协萃配合物的组成为:(RNH_3Cl)_3·ZnCl_2·TBP、(RNH_3Cl)_2·ZnCl_2·DBBP,求得协萃反应的平衡常数分别为logK_(12)(TBP)=3.09,logK_(12)(DBBP)=2.90,协萃配合物的生成常数分别为logβ_(12)(TBP)=1.34,logβ_(12)(DBBP)=1.90.计算了协萃反应的热力学函数值,并对协萃配合物的IR、NMR谱进行了讨论。
The synergistic extraction of zinc(Ⅱ) from hydrochloric acid with primary amine N1923 and neutral organophosphorus reagents (TBP, DBBP) has been investigated. By the methods of slope analysis and constant mole, the compositions of the syncrgistic extracting complexes have been determined to be (RNH3C1), ·ZnCl2 · TBP and (RNH3C1)2 · ZnCl2 ·DBBP respectively. The mechanism of the synergistic extraction of zinc(##) has been proposed as follows:
Moreover, the equilibrium constants and the thermodynamic functions of the synergistic reactions have been calculated. The IR and NMR spectra of the synergistic extracting complexes have been studied as well.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1989年第4期65-71,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目
关键词
锌
协同萃取
伯胺
中性磷萃取剂
primary amine neutral organophosphorus extractant synergism zine
