Efficient extraction of gold from water by liquid-liquid extraction or precipitation using hydrophobic ionic liquids

被引：32

作者：

Boudesocque, Stephanie ^{[1
]}

Mohamadou, Aminou ^{[1
]}

Dupont, Laurent ^{[1
]}

机构：

[1] Univ Reims, ICMR, CNRS UMR 7312, UFR Sci Exactes & Nat, F-51687 Reims 2, France

来源：

NEW JOURNAL OF CHEMISTRY | 2014年 / 38卷 / 11期

关键词：

SELECTIVE EXTRACTION; GREEN SOLVENTS; COMPLEXES; AU(III); COPPER; SILVER; ANION;

D O I：

10.1039/c4nj01115e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Extraction of tetrachloroaurate or tetrabromoaurate anions has been carried out using several ionic liquids bearing trialkyl(2-ethoxy-2-oxoethyl)ammonium (alkyl group = C2H5 [EtGBOEt(+)], n-C3H7 [PrGBOEt(+)] or n-C4H9 [BuGBOEt(+)]) cations and halide (Cl- or Br-), bis(trifluoromethanesulfonyl)imide (Tf2N-) and dicyanamide (Dca(-)) anions. The removal of gold anionic moieties from water was first studied by mixing aqueous solutions containing gold complexes and water soluble bromide ionic liquids. This led to the formation of a solid precipitate corresponding to a hydrophobic ionic liquid based on a tetrahalogenoaurate anion. Liquid-liquid extraction of anionic gold complexes using hydrophobic ionic liquids was also investigated.

引用

页码：5573 / 5581

页数：9

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