FXHX199407003CFJD9411异丙基膦酸单异辛酯负载树脂用于萃取色层以分离稀土元素Chromatographic Separation of Rare Earths Elements ( Ⅲ) by Mono-iso-octyl Isopropylphosphonate Loaded Resin陆坦钟攸兰梁树权Lu Tan, Zhong Youlan, Liang Shuquan (Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080)中国科学院化学研究所!北京100080本文报道异丙基膦酸单异辛酯负载树脂分离稀土(Ⅲ)的性能。实验结果表明采用不同浓度的稀盐酸淋洗可依次分离15种稀土(Ⅲ)。除钇(Ⅲ)/铒(Ⅲ)对(R.1.0)外,其余各相邻稀土(Ⅲ)均达到基线分离(R_a≥1.5)。所用酸度不超过2.0mol/L,低于常用的磷酸双(2-乙己基)酯(HDEHP)和2-乙已基膦酸单2-乙己基酯(HEHEHP)所需酸度。The behavior of mono-iso-octyl isopropylphosphonate, which is impregnated into macroreticular poly (methyl methacrylate)resin is described in the separation of rare earths (Ⅲ ). With 4 different concentrations of dilute HC1 as eluent,l5 rare earths( Ⅲ ) may be separated successively. Except the Y( Ⅲ ) /Er( Ⅲ ) pair (R_g 1.0),other neighboring RE pairs are separated clearly (R_g≥ l.5). The acidity for elution at most is 2.0 mol/L, which is lower than those required by the method using bis(2-ethylhexyl)phosphate or mono-(2-ethylhexyl) 2-ethylhexylphosphonate in RE separation. The distribution ratios between extractant-load-ed resin and dilute HCl for RE( Ⅲ ) have been determined.异丙基膦酸单异辛酯负载树脂萃取色层稀土元素分离Mono-iso-octyl isopropylphosphonateExtractant-loaded resinExtraction chromatographyRare earth separation国家自然科学基金资助项目分析化学Chinese Journal of Analytieal Chemistry199407O658负载树脂:5283,萃取色层:4767,异丙基膦酸单异辛酯:4528,分离:4528,稀土:1508,稀土元素:1251,膦酸:1206,异丙基:1078,HDEHP:569,己基:451,淋洗液:429,色层分离:424,分配比:411,HEHEHP:401,盐酸:364,化学研究所:363,LHCI:360,重稀土:339,酸度:324,分离系数:272B59SCTB94S4FXHX09559175;09594332;10347848;0150064;0150064;FXHX1994-07-153中文;B014;