Extraction of gold, palladium, and platinum from acidic media with cyclic sulfoxide derivative

doi:10.1016/S1005-8850(07)60022-X

Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material

Volume 14, Issue 2, April 2007, Pages 107-111

https://doi.org/10.1016/S1005-8850(07)60022-X Get rights and content

Abstract

The extraction of gold (III), palladium (II), and platinum (IV) from the acidic media with the cyclic sulfoxide derivative of α-dodecyl-tetrahydrothiophene 1-oxide (dtmso) was investigated. Gold (III), palladium (II), and platinum (IV) could be separated from the acidic media with suitable sulfoxide concentration and acidity. The extraction reaction of gold (III), palladium (II) or platinum (IV) is exothermic when dtmso is used as an extracting reagent. The coordination number was studied by the slope method. The results indicate that, in high acidity, the dtmso coordination number for extracting gold (III) or palladium (II) is 3, and that for platinum (IV) is 2. UV and FT-IR spectra were used to analyze the structure of the complex. Gold (III) is coordinated with the oxygen atom in S=O group in dtmso, and palladium (II) or platinum (IV) is coordinated with the sulfur atom in S=O group in dtmso.

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Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material

Abstract

References (11)

Practical and structural aspects of the separation of rhodium, palladium, iridium, and platinum with organic sulphoxides

J. Less Common Met.

Behavior and mechanism of the extraction of platinum (IV) with cyclic sulfoxide derivative-OTMSO

Rare Met. Mater. Eng.

Extraction of palladium (II) with OTMSO from acidic media

Rare Met.

A study on synthesis of sulfoxide and their extracting rare earth metals

Sci. China Ser. B

Study on the composition and structure of sulfoxide Pd(II) complex

Precious Met.

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Process for the separation and recovery of palladium and platinum from spent automobile catalyst leach liquor using LIX 84I and Alamine 336

Comparison of liquid-liquid extraction studies on platinum(IV) from acidic solutions using bis(2,4,4-trimethylpentyl) monothiophosphinic acid

Kinetic Studies of Gold Recovery from Diluted Chloride Aqueous Solutions Using Activated Carbon Organosorb 10 CO