摘要
研究了HEH/EHP(HA)和伯胺N_(1923)盐酸盐(RNH_3C1)的正庚烷溶液从HC1介质中对Zn(Ⅱ)的萃取。发现当以RNH_3Cl为主体萃取剂时,添加HA有利于对Zn(Ⅱ)的萃取;当以HA为主体萃取剂时,添加RNH_3C1则抑制了对Zn(Ⅱ)的萃取。考察了温度对协萃平衡的影响,并计算了体系的热力学函数。
The extraction of Zn(Ⅱ) from hydrochloride medium with 2-ethylhe-
xylphosphonic acid mono-2-ethylhexyl ester (HRH/EHP, HA) and hydrochloride
salt of primary amine N_(1923) (RNH_3Cl) in n-heptane has been investigated. A syn-
ergistic effect and antagonistic effect were found to be present in the system. lt
was ascertained that the interaction between HA and RNH_3Cl during extraction,
HA_(0)+RNH_3Cl_(0)?RNH_3A_(0)+H^(+)+Cl^(-), seriously affected the extraction of Zn(Ⅱ)
and that the synergistic or antogonistic extraction of Zn(Ⅱ) could be obtained in
the presence of excess RNH_3Cl over HA or excess HA over RNH_3Cl.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第2期B075-B080,共6页
Acta Metallurgica Sinica
基金
国家自然科学基金
关键词
ZN
萃取
HEH/EHP
伯胺
HEH/EHP
primary amine
Zn(Ⅱ)
synergistic extraction
antagonistic effect
