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化学学报
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化学学报 ›› 1976, Vol. 34 ›› Issue (1): 59-71. 上一篇    下一篇

论文

离子交换法研究稀土与一缩二羟乙酸络合反应的机理

姚克敏, 王秉渊, 朱益强   

  1. 中国科学院长春应用化学研究所
  • 投稿日期:1974-01-09 发布日期:2013-06-03

MECHANISM OF THE RARE-EARTH DIGLYCOLATE COMPLEXES FORMATION

YAO Kё-MING, WANG PING-YÜ, AN CHU I-CHIANG   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1974-01-09 Published:2013-06-03

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被引次数

1

利用静态阳离子交换法研究了镧、镨、钕、钐、钆、钇、钬及镥与一缩二羟乙酸的络合平衡,确定了络合的合适条件.确定在稀土金属离子浓度2×10-5M及配位体浓度1×10-4～3×10-3M时,生成组成为1:1;1:2;1:3的络合物.在pH=3.10,μ=0.50,用Fron us法及Schubert法计算了各元素络合物之Kfn值,两法所得结果相符.

The equilibrium in the complex formation of some rare-earths with diglycolio acid has been investigated by the static ion-exchange method.It has been shown that under these conditions:pH=3.10,μ=0.50,CLn=2x10-5 M and CH,A=1×10-3M(where CH,A=total concentration of rare-earth metations,CH,A=total concontration of the ligand diglycolic acid),complexes with compositions of 1:1,1:2,1:3 were formed.The values of formation contants calculated by the method of Fronaeus and also by that of Schubert agreed very well.