CL-P_(507)-HCl体系柱色层分离提纯高纯氧化钕的研究

Study on purification of highly pure neodymium oxide by extraction chromatography with CL P 507 HCl system

用ＣＬ－Ｐ５０７－ＨＣｌ体系柱色层法对镨、钕元素的分离进行了研究。讨论了树脂粒度、淋洗剂浓度、负载量、盐效应、柱长径比等因素对分离的影响，确定了镨、钕分离的较适合的条件。将上述结果用于去除高纯氧化钕中的镨杂质，取得了令人满意的结果。

The separation of praseodymium(Ⅲ) and neodymium(Ⅲ) by extraction chromatography with the system 2 ethylhexyl phosphonic acid mono 2 ethylhexyl ester [HEH(EHP)] HCl has been studied. The influence of particle size of CL P 507 resin,concentration of hydrochloric acid as eluant,loading of rare earth column ratio(L/Φ) and ammonium chloride on the separation has been discussed.Proper conditions of separation have been found out.The method has been used to separate praseodymium(Ⅲ) impurity in highly pure neodymium oxide,satisfactory results were obtained.