| 更迭镧系元素螯合物稳定常数序列改进离子交换法分离锕-镧系元素的研究 |
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| 引用本文： | 凌达仁,Powell J.E..更迭镧系元素螯合物稳定常数序列改进离子交换法分离锕-镧系元素的研究[J].高等学校化学学报,1987,8(10):923. |
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| 作者姓名： | 凌达仁 Powell J.E. |
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| 作者单位： | 1. 兰州大学现代物理系;
2. Ames Lab.DOE.USA |
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| 摘 要： | 本文提出了以双(2-氨基乙基)醚为骨架的氨羧螯合剂类作为选择性螯合剂,更迭镧系元素的螯合物稳定常数序列,改进用阳离子交换法分离锕-镧系混合物的新设想。报道了该类络合剂DETAPN,N,N′-三乙酸-N′-3-丙酸-双-2-氨基乙基醚的合成方法、阴离子质子常数、它和镧系元素的络合物稳定常数。讨论了该离子交换法在分离锕-镧系元素上应用的可能性。
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| 收稿时间： | 1986-01-28 |
On Altering the Lanthanide Chelate Formation Constant Sequence to Improve Ac-Ln Separations in Cation Exchange Elutions |
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| Ling Daren,J. F. Powell.On Altering the Lanthanide Chelate Formation Constant Sequence to Improve Ac-Ln Separations in Cation Exchange Elutions[J].Chemical Research In Chinese Universities,1987,8(10):923. |
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| Authors: | Ling Daren J F Powell |
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| Institution: | 1. Department of Modern Physics, Lanzhou University, Lanzhou;
2. Ames Lab., D. O. E., U. S. A. |
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| Abstract: | The philosophy of resolving actinon-lanthanon mixtures via cation-exchange elution with selective chelating agents is considered in view of the lanthanon chelate formation constant sequences obtained with various ligands derived from polyamino-polycarboxylic acid analogues of bis(2-amino-ethyl)ether-N N,N'N'-tetraacetic acid. Stability constant data and other characteristics of a newly synthesized variant, bis (2-aminoethyl)ether-N,N,N'-triacetic acid-N'-(3-propanoic acid) are reported. The possibility of its potential application is discussed for separation of actinon-lanthanon mixtures by ion exchange. |
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