Extraction of Lanthanide Nitrates in Multicomponent Aqueous-Organic Two-Phase Systems with D2EHPA

被引：0
作者：
V. V. Belova
M. M. Martynova
A. A. Erastov
机构：
[1] Russian Academy of Sciences,Kurnakov Institute of General and Inorganic Chemistry
来源：
Russian Journal of Inorganic Chemistry | 2018年 / 63卷
关键词：
lanthanide nitrates; di(2-ethylhexyl) phosphoric acid; multicomponent aqueous-organic biphasic systems; interphase distribution; separation;
D O I：
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中图分类号：
学科分类号：
摘要：
Lanthanum nitrate distribution in three-component aqueous-organic systems with D2EHPA from acetate or acetic acid–acetate solutions has been studied, it has been shown that variation in sodium acetate concentration or composition of CH3COONa–CH3COOH mixture can affect metal distribution ratios. It has been found that extraction in three-component mixture of 1: 1: 1 composition (aqueous solution Ln(NO3)3 + CH3COONa + CH3COOH–D2EHPA in hexane–isopropyl alcohol) can provide lanthanide separation, which is dependent on the ratio of sodium acetate and acetic acid in aqueous phase and on D2EHPA concentration in organic phase. Lanthanide–lanthanum separation factors have been calculated for the extraction of lanthanide nitrates from acetic acid–acetate solutions.
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页码：1651 / 1655
页数：4
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