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Journal of Radioanalytical and Nuclear Chemistry

, Volume 201, Issue 3, pp 191–198 | Cite as

Solvent extraction of rhodium, ruthenium, and iridium with HDEHP

  • G. L. Yan
  • J. Alstad
Article

Abstract

Solvent extraction of rhodium, ruthenium, and iridium with HDEHP from thioureachloride media was investigated. Under the conditions ([Cl]=0.50 M, [HDEHP]=1.0M, [SC(NH2)2]=0.50M, pH=4.50, phase contact time 1 min), Rh(III) is extracted 88.3%, Ru(III) and Ir(III) 40.8% and 28.5% respectively at phase ratio 1∶1. The formation of rhodium-thiourea complexes in aqueous solutions, even at 5M chloride concentration, with the possible composition Rh[SC (NH2)2]63+ is confirmed by the observed molar ratio of thiourea to rhodium and UV-spectra.

Keywords

Chloride Physical Chemistry Aqueous Solution Inorganic Chemistry Ruthenium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    R. I. Edwards, W. A. M. te Riele, Commercial Process for Precious Metals in: Handbook of Solvent Extraction, Wiley Interscience, New York, 1983.Google Scholar
  2. 2.
    E. Benguerel, G. P. Demopoulos, A Novel Solvent Extraction System for Rhodium in: Solvent Extraction in the Process Industries, Elsevier Applied Science, London, 1993.Google Scholar
  3. 3.
    W. Robb, G. M. Harris,J. Amer. Chem. Soc., 87 (1965) 4472.Google Scholar
  4. 4.
    M. T. Kostanski, H. Freiser,Anal. Chim. Acta, 242 (1991) 191.Google Scholar
  5. 5.
    D. A. Palmer, G. M. Harris,Inorg. Chem., 14 (1975) 136.Google Scholar
  6. 6.
    W. P. Griffith, The Chemistry of the Rarer Platinum Metals, Wiley Interscience, London, 1967.Google Scholar
  7. 7.
    M. Ali Khan, D. F. Morris,J. of Less-Common Metals, 13 (1967) 53.Google Scholar
  8. 8.
    X. Y. Wang, M. Jiang,J. of Nuclear and Radiochemistry (Chinese), 8 (4) (1986) 210.Google Scholar
  9. 9.
    G. L. Yan, J. Alstad, Solvent Extraction of Rhodium with Kelex 100 in: Hydrometallurgy '94, Chapman & Hall, London, 1994.Google Scholar
  10. 10.
    G. L. Yan, J. Alstad,J. Radioanal. Nucl. Chem., 196 (1995) 287.Google Scholar
  11. 11.
    W. P. Griffith, J. A. McCleverty, Rhodium, Gmelin Handbook Suppl., Vol. B3, 9, Springer-Verlag, Berlin, 1984.Google Scholar

Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • G. L. Yan
    • 1
  • J. Alstad
    • 1
  1. 1.Department of ChemistryUniversity of OsloOsloNorway

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