Studies on the synergistic extraction of rare earths from nitrate medium with mixtures of sec-nonylphenoxy acetic acid and 1,10-phenanthroline

被引：30

作者：

Fan, Shujuan ^{[1
]}

Zhao, Xiaowei ^{[1
]}

Song, Naizhong ^{[1
]}

Shi, Yunfeng ^{[1
]}

Jia, Qiong ^{[1
]}

Liao, Wuping ^{[2
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, State Key Lab Rare Earth Resource Utilizat, Changchun Inst Appl Chem, Changchun 130022, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2010年 / 71卷 / 02期

关键词：

Synergistic extraction; Rare earths; sec-Nonylphenoxy acetic acid; 1,10-Phenanthroline; METHOXYBENZOYL-N-PHENYLHYDROXYLAMINE; SOLVENT-EXTRACTION; BIS(2,4,4-TRIMETHYLPENTYL)PHOSPHINIC ACID; DI(2-ETHYLHEXYL)PHOSPHORIC ACID; OCTYLPHENOXYACETIC ACID; CHLORIDE MEDIUM; SEPARATION; COMBINATION; 1-PHENYL-3-METHYL-4-BENZOYL-PYRAZALONE-5; LANTHANIDES(III);

D O I：

10.1016/j.seppur.2009.12.003

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The extraction of rare earths with mixtures of sec-nonylphenoxy acetic acid (CA100. H(2)A(2)) and 1,10-phenanthroline (phen, B) in benzene has been investigated from nitrate medium. The mixtures show synergistic effects on all the selected rare earths, lanthanum, neodymium, samarium, terbium, ytterbium, and yttrium. The extraction stoichiometries of samarium and yttrium with CA100 and its mixtures with phen have been studied in detail with the methods of slope analysis and constant mole. The equilibrium constants and thermodynamic functions are calculated. In addition, the mixtures are proved to have higher selectivity when applied to the separation of the lanthanoids from yttrium compared with single CA100 system. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：241 / 245

页数：5

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