Distribution coefficients of La, Ce, Pr, Nd, and Sm on Cyanex 923-, D2EHPA-, and PC88A-impregnated resins

Gwang Seop Lee; Masahito Uchikoshi; Kouji Mimura

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Distribution coefficients of La, Ce, Pr, Nd, and Sm on Cyanex 923-, D2EHPA-, and PC88A-impregnated resins

机译：La，Ce，Pr，Nd和Sm在Cyanex 923-，D2EHPA-和PC88A浸渍树脂上的分布系数

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Distribution coefficients of La, Ce, Pr, Nd, and Sm on solvent-impregnated resins were determined in hydrochloric acid media for the purpose of La purification. Trialkylphosphine (Cyanex 923), 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (PC88A), and di(2-ethylhexyl) phosphoric acid (D2EHPA) were used as the extractant for the solvent-impregnated resin in the present work. Separation factors were also obtained in order to estimate the potential for the separation of Ce, Pr, Nd, and Sm from La. We found that the extraction mechanism by which the solvent-impregnated resin works is similar to that of solvent extraction. Separation factors between La and the other light rare earth elements and a high sorption rate indicated that the D2EHPA-impregnated resin is the best adsorbent for purification of La among the three tested solvent-impregnated resins.

机译：为了进行La纯化，在盐酸介质中测定了La，Ce，Pr，Nd和Sm在溶剂浸渍树脂上的分布系数。三烷基膦（Cyanex 923），2-乙基己基膦酸单-2-乙基己基酯（PC88A）和二（2-乙基己基）磷酸（D2EHPA）被用作本工作中溶剂浸渍树脂的萃取剂。还获得了分离因子，以估计从La中分离Ce，Pr，Nd和Sm的潜力。我们发现，溶剂浸渍树脂的萃取机理与溶剂萃取相似。 La与其他轻稀土元素之间的分离系数和高吸附速率表明，在三种测试的溶剂浸渍树脂中，D2EHPA浸渍树脂是纯化La的最佳吸附剂。

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《Separation and Purification Technology》 |2009年第1期|共7页
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Gwang Seop Lee; Masahito Uchikoshi; Kouji Mimura;
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正文语种 eng
中图分类化学工业;
关键词
Rare earth elements; Distribution coefficient; Solvent-impregnated resin; Separation factor;

机译：稀土元素分配系数溶剂浸渍树脂分离系数;

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Distribution coefficients of La, Ce, Pr, Nd, and Sm on Cyanex 923-, D2EHPA-, and PC88A-impregnated resins

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