Preferential extraction of hafnium over zirconium with D2EHPA through selective complexation of organic acids

被引：10

作者：

Zhao, Jialin ^{[1
]}

Yang, Tao ^{[1
]}

Zhang, Hao ^{[1
]}

Sun, Guoxin ^{[1
]}

Cui, Yu ^{[1
]}

机构：

[1] Univ Jinan, Inst Smart Mat & Engn, Sch Chem & Chem Engn, 336 Nanxinzhuang West Rd, Jinan 250022, Shandong, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2019年 / 321卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Zirconium; Hafnium; Solvent extraction; D2EHPA; Hydrochloric acid; Organic acid; SOLVENT-EXTRACTION; H2SO4; SOLUTIONS; SEPARATION; ZR; HF; MIXTURE; HF(IV); ZR(IV); REAGENT; DIBK;

D O I：

10.1007/s10967-019-06585-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Nuclear grade zirconium and hafnium are important materials in nuclear power plants, which are usually produced with solvent extraction and separation technology. In this paper, the preferential extracting hafnium was successfully achieved by the selective complexation of the selected organic acids. Hydrochloric acid concentration, organic acid concentration, D2EHPA concentration were investigated to explore the optimum extraction conditions. Increasing acidity and extractant concentration was not conducive to the separation of zirconium and hafnium, while organic acid could effectively improve the separation factor, which was verified by ATR-FTIR spectroscopy. The largest separation factor, 9.936, for hafnium over zirconium was obtained.

引用

页码：333 / 339

页数：7

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