Extraction of Uranium(VI) by HDEHP from Aqueous Diamine Solutions
Extraction of Uranium(VI) by HDEHP from Aqueous Diamine Solutions
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HDEHP 从二胺水溶液中萃取铀 (VI)
DOI：
10.1524/ract.1996.73.4.207
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
A. Kandil
中科院分区：
文献类型：
--
作者：
S. A. Sayed;A. Kandil
UO的提取！以二(2-乙基己基)磷酸(HDEHP)甲苯为萃取剂，从离子强度为0.2M的水溶液(NaC104)和含有五种不同结构相关的二胺的类似溶液中研究了这一反应。萃取体系的光谱和热力学数据表明，UO！当使用二胺水溶液时，萃取是由于一个二胺分子直接键合到U01-H2(DEHP)4物种上。乙二胺、N，N-二甲基乙二胺、N，N-二乙二胺、1，2-丙二胺和1，3-丙二胺对UC>；2的萃取率分别为18.2倍、24倍、27倍、37倍和36倍。
The extraction of UO! is investigated, from an aqueous medium of 0.2 M ionic strength (NaC104), and from a similar solution containing five different structurally related diamines using bis(2-ethylhexyl) phosphoric acid (HDEHP) in toluene as extradant. The spectra and thermodynamic data for the extraction system have shown that the increase in the UO! extraction when aqueous diamine solutions are used, is due to direct bonding of one diamine molecule to the U01-H2(DEHP)4 species. The enhancement in the extraction of UC>2 with the diamine in the aqueous phase amounts to 18.2, 24, 27, 37 and 36 times respectively, in case of ethylenediamine, N,N dimethylethylenediamine, N,N diethylethylene diamine, 1,2 propandiamine and 1,3 propandiamine.