Study on the ternary synergistic extraction of uranium/VI/ by chelating-chelating-neutral extractant

  • Chen Yude
  • Mao Jiajun
  • Fu Lei
  • Li Xintai


The synergic extraction of uranyl nitrate from chloroform media with 1-phenyl-3-methyl-4-benzoyl-pyrazonole-5 /PMBP/, tributylphosphate /TBP/ and thenoyltrifluorylacetone /TTA/ was studied. It was found that synergic effect occurs during the extraction of uranyl nitrate with the chloroform solution of PMBP-TTA-TBP. The formation of the ternary extracted complex UO2AA'B was confirmed by the usual slope method. A method was proposed for the calculation of the ternary equilibrium constant which was evaluated to be 1gK111=2.65. Also the binary synergic extractions of uranyl nitrate with PMBP-TBP and TTA-TBP were studied. The binary equilibrium constants were found to be 1gK201=3.07 and 1gK021=1.39, respectively. An attempt has been made to interpret the data mainly on the basis of statistical factor.


Nitrate Physical Chemistry Inorganic Chemistry Chloroform Synergic Effect 
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Copyright information

© Akadémiai Kiadó 1986

Authors and Affiliations

  • Chen Yude
    • 1
  • Mao Jiajun
    • 1
  • Fu Lei
    • 1
  • Li Xintai
    • 1
  1. 1.Department of Nuclear ScienceFudan UniversityShanghaiThe People's Republic of China

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