长链氨羧络合剂萃取稀土饵  

Extraction of Er(Ⅲ) with a Long-Chain Trilon

作　　者：郭金波[1] 张桂英[1] 张周[1] 

机构地区：[1]洛阳师范学院化学系,河南洛阳471022

出　　处：《化学研究》2005年第2期19-21,共3页Chemical Research

摘　　要：研究了长链氨羧络合剂N,N′-二(十二烷基)乙二胺二乙酸钠(Na2R2Y)的氯仿溶液萃取稀土饵的行为;考察了溶液酸度、络合剂浓度、相比和温度对萃取率的影响.用摩尔比法测定了Na2R2Y与Er3+的络合摩尔比为1∶1;结果表明,Na2R2Y的氯仿溶液对饵的萃取率随络合剂浓度的增大而增大,随温度的升高而降低.Extraction behavior!of Er(Ⅲ) with a long-chain trilon(Na_ 2R_ 2Y) in chloroform was investigated. Complex ratio between Na_ 2R_ 2Y and Er 3+ was determined as 1∶1 by mole ratio method. The influence of acidity,concentration of Na_ 2R_ 2Y ,phase-radio and extraction temperature were studied. The results indicate that the extraction percentage of Er 3+ increases with the increase of concentration of Na_ 2R_ 2Y and the distribution ratio lgD decreases linearly with the increase of temperature.

关 键 词：氨羧络合剂 稀土 长链 ER^3+ 溶液萃取 十二烷基 溶液酸度 摩尔比法 氯仿溶液 萃取率 乙酸钠 乙二胺 浓度 温度 增大 

分 类 号：O623.736[理学—有机化学] TQ171.112[理学—化学]