N,N'-二(十二烷基)乙二胺二乙酸萃取钕的研究  

Study on Extraction of Nd with a New Reagent N,N'-di(dodecyl)ethylenediamien-di-acetic Acid

作　　者：杜巧云[1] 刘春辉[1] 

机构地区：[1]洛阳师范学院化学系,河南洛阳471022

出　　处：《稀土》2006年第3期94-97,共4页Chinese Rare Earths

摘　　要：研究了以N,N＇-二（十二烷基）乙二胺二乙酸（简写为H2R2Y）为络合剂、氯仿作为稀释剂萃取稀土钕的行为.考察了水相酸度、萃取剂浓度、温度、相比等对萃取率的影响.用摩尔比法和电导法确定了R2H2Y与Nd^3＋的络合比为2：1.实验表明,钕的萃取率随络合剂浓度增大而增大,分配比在22℃～35℃范围内随温度的升高而降低,在pH=6～7范围内,H2R2Y对Nd3＋的萃取率接近100%.Extraction behaviour of Nd （ Ⅱ ） with a new trilon N ,N＇-di （dodecyl） ethylenediamien-di-acetic acid （H2R2Y）in chloroform has been investigated. The influence of acidity,concentration of H2R2Y,phase-radio and temperature of extraction reaction has been studied. Complex ratio between H2R2Y and Nd^3＋ 2 ; 1 was substantiated by conductance and mole ratio method. The results indicate that percentage extraction of Nd^3＋ increases with the increase of concentration of H2R2Y and the distribution ratio lgD decreases linearly with the increase of temperature at range 22℃～35℃ ,when pH=6～7,E≈100%.

关 键 词：N N'-二(十二烷基)乙二胺二乙酸 氨羧络合剂 萃取 螯合物 钕 

分 类 号：TF804.2[冶金工程—有色金属冶金]