Extraction of lanthanide(III) nitrates with solutions of trialkylmethylammonium di(2-ethylhexyl) phosphate in toluene

被引：0

作者：

Pyartman, AK ^{[1
]}

Kovalev, SV ^{[1
]}

Keskinov, VA ^{[1
]}

机构：

[1] St Petersburg State Technol Inst, St Petersburg, Russia

来源：

RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 1998年 / 71卷 / 05期

关键词：

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A study was made of extraction of lanthanide(III) (from lanthanum to holmium) nitrates by solutions of trialkylmethylammonium di(2-ethylhexyl) phosphate in toluene at T = 298.15 K and pH 2. The extraction isotherms were analyzed assuming formation of two different extraction complexes (R4N)(3)[Ln(NO3)(3)A(3)] and (R4N)(2)[Ln(NO3)(3)A(2)] in the organic phase. The extraction constants calculated from the experimental results increase in passing from lanthanum to europium and then decrease to holmium.

引用

页码：786 / 789

页数：4

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