Journal of Radioanalytical and Nuclear Chemistry

, Volume 143, Issue 2, pp 373–379 | Cite as

Interaction of nitric acid and tetravalent actinides with uranium in TBP-phase

  • B. Ya. Zilberman
  • Yu. S. Fedorov
Solution Chemistry


Infrared absorption spectra of HNO3 solutions in UO2(NO3)2(TBP)2 have been taken. The formation of a hydrogen bond between HNO3 and nitrate or phosphoryl group in UO2(NO3)2(TBP)2 has been established. On extracting Pu(IV) and Np(IV) by 30% TBP-dodecane, dependence of the distribution coefficients on concentration has been found at UO2(NO3)2 concentrations in the aqueous phase upwards from 0.4M. This dependence appeared in the temperature interval 0–60°C. Such effects may be caused by ordered structure of saturated uranyl nitrate solutions in TBP.


Nitrate Absorption Spectrum Uranium Nitric Acid Aqueous Phase 
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Copyright information

© Akadémiai Kiadó 1990

Authors and Affiliations

  • B. Ya. Zilberman
    • 1
  • Yu. S. Fedorov
    • 1
  1. 1.Khlopin Radium InstituteLeningradUSSR

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