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 hydrochloridesalt 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. ltwas 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 inthe presence of excess RNH_3Cl over HA or excess HA over RNH_3Cl.
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