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Extraction of palladium from nitrate solution by triphenylphosphine or triphenylphospine oxide in chloroform

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Abstract

It is found that from aqueous nitric acid media, Pd is highly extracted by chloroform solutions containing triphenylphosphine (Ph3P) and not extracted by triphenylphosphine oxide (Ph3PO) diluted with chloroform. The effect of diluent, nitric acid molarities, Ph3P concentration and temperature on palladium extraction by Ph3P was investigated. Slope analysis of the experimental results indicated that the main extracted species is in the form of Pd(NO3)2·2Ph3P.IR spectrum analysis of the extracted complex indicated the direct extraction of palladium as nitrate and bonding to phosphorus. Extraction of some fission product radionuclides from 2M HNO3 showed the selective extraction of palladium by Ph3P in chloroform.

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Authors and Affiliations

  1. Hot Laboratory Centre, Atomic Energy Authority, 13758, Cairo, (Egypt)

    S. A. El-Reefy, J. A. Daoud & H. F. Aly

Authors
  1. S. A. El-Reefy
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  2. J. A. Daoud
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  3. H. F. Aly
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El-Reefy, S.A., Daoud, J.A. & Aly, H.F. Extraction of palladium from nitrate solution by triphenylphosphine or triphenylphospine oxide in chloroform. Journal of Radioanalytical and Nuclear Chemistry, Articles 158, 303–312 (1992). https://doi.org/10.1007/BF02047117

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  • DOI: https://doi.org/10.1007/BF02047117

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