Separation of hafnium from zirconium in hydrochloric acid solution with di(2-ethylhexyl)phosphoric acid by solvent extraction

被引：1

作者：

Tao Yang ^{[1
,2
]}

Guo-Xin Sun ^{[1
]}

Yuan Qian ^{[2
]}

Ji-Fei Ma ^{[2
]}

Yu-Lan Li ^{[2
]}

机构：

[1] School of Chemistry and Chemical Engineering,University of Jinan

[2] Shanghai Institute of Applied Physics,Chinese Academy of Sciences

来源：

NuclearScienceandTechniques | 2019年 / 30卷 / 02期

关键词：

Zirconium; Hafnium; D2EHPA; Solvent extraction; Separation;

D O I：

暂无

中图分类号：

TL341 [结构材料];

学科分类号：

082701 ;

摘要：

The preparation of nuclear-grade zirconium and hafnium is very important for nuclear power. The separation of hafnium from zirconium in a hydrochloric acid solution by solvent extraction was investigated with di(2-ethylhexyl)phosphoric acid(D2 EHPA). The effects of hydrochloric acid concentration, extractant concentration,diluents, and temperature on the distribution coefficient of hafnium and zirconium were studied. The species extracted were ZrOA·2 HA and HfOA-2 HA. In this process, the separation factors varied with different diluents and followed the order octane > hexane > toluene > chloroform.A high separation factor value of 4.16 was obtained under the conditions of a solution containing 0.05 mol/L HCl and0.01 mol/L D2 EHPA for the separation of hafnium from zirconium. The extraction reaction was endothermic.

引用

页码：53 / 59

页数：7

共 23 条

[21] Solvent extraction of zirconium(IV) from chloride media by D2EHPA in kerosene [J].

Biswas, RK ;

Hayat, MA .

HYDROMETALLURGY, 2002, 63 (02) :149-158

[22]

Theoretical predictions of hydrolysis and complex formation of group-4 elements Zr, Hf and Rf in HF and HCl solutions[J] . Valeria Pershina,D. Trubert,C. Le Naour,Jens Volker Kratz.Radiochimica Acta . 2002 (12/2)

[23]

Analytical Separation of Titanium(IV), Zirconium(IV) and Hafnium(IV) Using Tris(2-Ethylhexyl)Phosphate as an Extractant[J] . J. S. Gaudh,V. M. Shinde.Analytical Letters . 1995 (6)

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