Journal of Radioanalytical and Nuclear Chemistry

, Volume 147, Issue 2, pp 287–295 | Cite as

Synergistic extraction of uranium(VI) with 1-phenyl-3-methyl-4-acylpyrazolone-5 and neutral extractants

  • Mao Jia-Jun
  • Jia Wei-Jie
  • Shao Xing-Zhi
  • Chen Yu-De
Article

Abstract

The synergistic extraction of uranium(VI) from hydrochloric acid solution with five chelating agents: 1-phenyl-3-methyl-4-benzoylpyrazolone-5 (PMBP), 1-phenyl-3-methyl-4-acetylpyrazolone-5 (PMAP), 1-phenyl-3-methyl-4-(2′-chlorobenzoyl)pyrazolone-5 (PMCBP), 1-phenyl-3-methyl-4-(p-nitrobenzoyl)pyrazolone-5 (PMNBP) and 1-phenyl-3-methyl-4-trifluoroacetylpyrazolone-5 (PMTFP) plus the neutral extractants tributylphosphate (TBP), dioctyl sulfoxide (DOSO) and trioctylphosphine oxide (TOPO) in chloroform has been investigated. The extraction coefficients have been found to be greater for such mixtures than the individual component. The formulas of the extracted species have been determined to be UO2A2B (where HA = chelating agent, B = neutral extractant). Extraction power of these chelating agents increases as follows: PMCBP>PMNBP>PMTFP=PMBP>PMAP. Synergistic extraction power of the neutral extractants increases as follows: TOPO>DOSO>TBP. The extraction equilibrium constants have been calculated. The mechanism of the synergistic extraction and possible structure of the extracted species are discussed.

Keywords

Uranium Hydrochloric Acid Topo Hydrochloric Acid Solution Chelate Agent 

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References

  1. 1.
    QIN QI-ZONG, MAO JIA-JUN, JING ZHONG-KAO, LU ZHI-REN, Chemical Separation Methods, Atomic Energy Press, Beijing, 1984.Google Scholar
  2. 2.
    GU YI-DONG, SONG YUAN, Chem. J. Chinese Univ., 2 (1981) 2.Google Scholar
  3. 3.
    S. UMETAMI, M. MATSUI, Anal. Chim. Acta, 113 (1980) 315.CrossRefGoogle Scholar
  4. 4.
    WANG JING-JING, MAO JIA-JUN, J. Fudan Univ. (Natural Science), 19 (1980) 322.Google Scholar
  5. 5.
    MAO JIA-JUN, SONG AI-BAO, DUAN LONG-BIAO, Acta Chim. Sinica, 39 (1981) 37.Google Scholar
  6. 6.
    ZHUANG WEI-NONG, YU YIN, SHI HAO, ZHANG HUA-LIN, Chem. J. Chinese Univ., 5 (1984) 616.Google Scholar
  7. 7.
    JIA WEI-JIE, WANG LI-JIAN, FU LEI, MAO JIA-JUN, J. Radioanal. Nucl. Chem., 131 (1989) 81.CrossRefGoogle Scholar
  8. 8.
    MAO JIA-JUN, CHEN YU-DE, ZHANG GUI-RONG, ZHOU ZU-MING, J. Radioanal. Nucl. Chem., 100 (1986) 103.Google Scholar
  9. 9.
    B. S. JENSEN, Acta. Chim. Scand., 13 (1959) 1668.Google Scholar
  10. 10.
    J. STARY, H. HREISES, Equilibrium Constants of Liquid-Liquid Distribution Reactions, Part IV. Pergamon Press, Oxford, 1978.Google Scholar
  11. 11.
    CHEN YU-DE, Chem. J. Chinese Univ., 6 (1985) 290.Google Scholar

Copyright information

© Akadémiai Kiadó 1991

Authors and Affiliations

  • Mao Jia-Jun
    • 1
  • Jia Wei-Jie
    • 1
  • Shao Xing-Zhi
    • 1
  • Chen Yu-De
    • 1
  1. 1.Department of Nuclear ScienceFudan UniversityShanghai(PR China)

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