【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N d3+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N d3+的萃取率接近100%。更多还原

【Abstract】 Extraction behaviour of Nd（Ⅲ） 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 Nd³⁺ 2∶1 was substantiated by conductance and mole ratio method.The results indicate that percentage extraction of Nd³⁺ 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%.更多还原