Separation of Americium(III) from Europium(III) by Extraction Based on in situ Formation of Dioctylammonium Dioctyldithiocarbamate Extractant
Separation of Americium(III) from Europium(III) by Extraction Based on in situ Formation of Dioctylammonium Dioctyldithiocarbamate Extractant
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基于二辛基二硫代氨基甲酸二辛铵萃取剂萃取分离镅(III)和铕(III)
DOI：
10.1080/18811248.2007.9711277
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
H. Suganuma
中科院分区：
文献类型：
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作者：
S. Miyashita;M. Yanaga;I. Satoh;H. Suganuma
本文研究了一种从三价稀土（RE(III)）离子中去除微量放线素（MA）的有效方法。采用了一种萃取技术，该技术是基于原位形成的二辛基二辛基二硫代氨基甲酸铵（DOA+DODTC−）作为萃取剂。该技术的优点是不需要考虑萃取剂的化学稳定性。用DOA+从硝酸介质中萃取Am（III）和Eu（III）。研究了二硫化碳和二辛基胺在硝基苯中产生的DODTC−。Am(III)/Eu（III）的分离系数高于氰ex301/煤油萃取法，与合成DOA+DODTC−/硝基苯的常规萃取法的分离系数相近。Am（III）与RE（III）的高选择性分离是由于它们的金属离子对二硫代氨基甲酸酯官能团中的两个硫原子的反应活性不同。
In this study an efficient method is developed for removal of minor actinoids (MA) from trivalent rare earth element (RE(III)) ions. An extraction technique is employed that is based on the in situ formation of dioctylammonium dioctyldithiocarbamate (DOA+DODTC−) as an extractant. This technique has an advantage in that the chemical stability of the extractant need not be taken into consideration. The extraction of Am(III) and Eu(III) from a nitric medium with DOA+.DODTC− resulting from carbon disulfide and dioctyl amine in nitrobenzene is studied. The separation factor of Am(III)/Eu(III) is a higher value than that obtained by a cyanex301/kerosene extraction and a similar value with that obtained by a normal extraction of synthesized DOA+DODTC−/nitrobenzene. The high selectivity for the separation of Am(III) from RE(III) arises from the difference in the reactivity of their metal ions to two sulfur atoms in the functional group of dithiocarbamate.