A short review of the separation of iridium and rhodium from hydrochloric acid solutions by solvent extraction

Le, M.N., Lee, M.S. and Senanayake, G. (2018) A short review of the separation of iridium and rhodium from hydrochloric acid solutions by solvent extraction. Journal of Solution Chemistry, 47 (8). pp. 1373-1394.

Abstract

Iridium and rhodium are among the platinum group metals. The properties, production processes, and aqueous chemistry of both metals are reviewed. The separation of Ir(IV) and Rh(III) from hydrochloric acid solution is dependent on the characteristics of the solvent extraction systems. In most of the extraction conditions, Ir(IV) is selectively extracted over Rh(III) by either amines or neutral extractants. Rh(I) can be selectively extracted over Ir(III) by neutral extractants after Rh(III) is reduced in the presence of a reducing agent. The separation of these two metals using cationic extractants has also been reported. Although selective extraction of one metal over the other is possible, more efficient solvent extraction systems need to be developed.

Item Type:	Journal Article
Murdoch Affiliation(s):	School of Engineering and Information Technology
Publisher:	Springer Netherlands
Copyright:	© 2018 Springer Science+Business Media, LLC, part of Springer Nature
URI:	http://researchrepository.murdoch.edu.au/id/eprint/41222

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