SOLVENT-EXTRACTION OF PALLADIUM(II) AND PLATINUM(IV) FROM AQUEOUS CHLORIDE MEDIA WITH N,N-DIOCTYGLYCINE

被引：13

作者：

INOUE, K ^{[1
]}

YOSHIZUKA, K ^{[1
]}

BABA, Y ^{[1
]}

WADA, F ^{[1
]}

MATSUDA, T ^{[1
]}

机构：

[1] KYUSHU UNIV,DEPT ORGAN SYNTH,HIGASHI KU,FUKUOKA 812,JAPAN

来源：

HYDROMETALLURGY | 1990年 / 25卷 / 02期

关键词：

D O I：

10.1016/0304-386X(90)90043-2

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Solvent extraction of palladium(II) and platinum(IV) from acidic aqueous chloride media with N,N-dioctylglycine in toulene was investigated. The experimental results of the distribution equilibria suggested that palladium(II) is extracted as a 1 : 2 metal : reagent chelate according to the reaction: PdCL24-+H2R2⇋PdR2+2H++4Cl-. The data indicated that platinum(IV) was extracted as a 1 : 4 : 2 metal : chloride ion : reagent complex according to the solvating reaction: PtCL26-+H2R2⇋Pt·2HR·Cl4+2Cl-. The equilibrium constants for these extraction reactions were evaluated as Ke = 2.2 × 102 (mol/dm3)5 for palladium(II) and Ke = 6.3 × 102 (mol/dm3). Infrared spectra of the free reagent and the glycino complexes of these metals were studied to obtain some information on the interaction between metal ions and the reagent molecules. © 1990.

引用

页码：271 / 279

页数：9

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