Solvent extraction of nitric acid,uranium(VI) and thorium(IV) by N,N,N',N'-tetrahexylsuccinylamide

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Solvent extraction of nitric acid,uranium(VI) and thorium(IV) by N,N,N',N'-tetrahexylsuccinylamide

机译：N，N，N'，N'-四己基琥珀酰酰胺溶剂萃取硝酸，铀（VI）和or（IV）

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A new kind of diamideN,N,N',N'-tetrahexylsuccinylamide (THSA)wassynthesized,characterized and used for the extraction of HNO3,U(VI) and Th(IV)in a diluent composed of 0.5 volume fraction1,2,4-trimethy benzene(TMB) and 0.5 volume fraction kerosene(OK).Extraction distribution coefficients of U(VI) and Th(IV) as functionsof aqueous nitric acid concentration, extractant concentration,temperature and salting-out agent (LiNO3) have been studied, and it is found that THSA as an extractant is superior to TBP for extraction ofU(VI) and Th(IV).Back extraction was also studied.At low acidity, themain adduct of THSA and HNO3 is HNO3.THSA.THSA.(HNO3)2 and THSA.(HNO3)3 are also found at high acidity.The compositions of extracted species, apparent equilibrium constants and enthalpies ofextraction reactions have also been calculated.

机译：合成，表征了一种新型的二酰胺N，N，N'，N'-四己基琥珀酰酰胺（THSA），用于在0.5体积分数1,2,4组成的稀释剂中提取HNO3，U（VI）和Th（IV） -三甲基苯（TMB）和0.5体积分数的煤油（OK）。研究了U（VI）和Th（IV）的萃取分布系数与硝酸水溶液浓度，萃取剂浓度，温度和盐析剂（LiNO3）的关系。并发现THSA作为萃取剂在萃取U（VI）和Th（IV）方面优于TBP。还研究了反萃取。在低酸度下，THSA和HNO3的主要加合物为HNO3.THSA.THSA。（还发现了HNO3）2和THSA。（HNO3）3在高酸性下的情况。还计算了萃取物的组成，表观平衡常数和萃取反应的焓。

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《核技术（英文版）》 |1999年第1期|19-23|共5页
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Laiyang Agricultural College, Laiyang 265200;

Laiyang Agricultural College, Laiyang 265200;

Laiyang Agricultural College, Laiyang 265200;

Shanghai Institute of Nuclear Research, the Chinese Academy ofSciences, Shanghai 201800;

Shanghai Institute of Nuclear Research, the Chinese Academy ofSciences, Shanghai 201800;

Department of Chemistry, Shandong University, Jian 250100;

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类物理学;
关键词
N; N; N'; N'-tetrahexylsuccinylamide; Nitric acid; Uranium(VI); Thorium(IV); Back extraction; Salting-out agent;

机译：N;N;N';N'-四己基琥珀酰胺;硝酸;铀（VI）;T（IV）;反萃取;盐分剂;

Solvent extraction of nitric acid,uranium(VI) and thorium(IV) by N,N,N',N'-tetrahexylsuccinylamide

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