Solvent Extraction of Rhodium(III) and Iridium(IV) from Hydrochloric Acid Solution

Solvent extraction experiments of Rh(III) and Ir(IV) were performed on the HC1 solution by using Alamine336 and TBP. The extraction percentage of Rh and Ir by Alamine336 was much higher than that by TBP. For the solvent extraction with Alamine336, the extraction percentage of Rh and Ir decreased wit...

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Bibliographic Details
Published inJournal of the Korean Institute of Metals and Materials Vol. 48; no. 5; pp. 430 - 435
Main Authors Lee, Manseung, Lee, Jinyoung, Sun, Panpan
Format Journal Article
LanguageKorean
Published 01.05.2010
Subjects
Hydrochloric acid
Iridium
Scrubbing
Solvent extraction
Tin
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Summary:Solvent extraction experiments of Rh(III) and Ir(IV) were performed on the HC1 solution by using Alamine336 and TBP. The extraction percentage of Rh and Ir by Alamine336 was much higher than that by TBP. For the solvent extraction with Alamine336, the extraction percentage of Rh and Ir decreased with a HC1 concentration. However, the extraction percentage of both metals by TBP was below 12% in our experimental range and increased with an increasing HC1 concentration of up to 8 M. From the mixed solution of Ir with an excess SnCl(2), most of the tin was extracted by Alamine336 and TBP. However, the extraction percentage of Ir by Alamine336 was reduced and no iridium was extracted by TBP. The extraction behavior of Ir and Sn was investigated by scrubbing experiments on the loaded Ir with a SnCl(2) solution.
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ISSN:1738-8228
DOI:10.3365/KJMM.2010.48.05.430