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  • 1960-1964  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    A contribution on the mechanism of plutonium nitrate extraction by mono- and dibutyl phosphates (1960)
    Springer
    Atomic energy 6 (1960), S. 76-78 
    Details
    ISSN: 1573-8205
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Notes: Abstract In a previous communication [1] we examined the effect of monobutyl phosphate (MBP) and dibutyl phosphate (DBP) on the extraction of plutonium nitrate by tributyl phosphate (TBP). In the present work the mechanism of plutonium extraction by MBP and DBP is elucidated. An investigation was made of the mechanism of plutonium nitrate extraction by MBP and DBP with an ionic strength equal to 6. It was shown that plutonium is extracted in the form of PuK4, where K is [(C4H9)2PO4 − or [C4H9HPO4]−. It was calculated that the equilibrium constant for the reaction of plutonium nitrate with MBP equals (1.5 ± 0.25)·103 and with DBP, (6.15 ± 0.85) ·103.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01836104
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stability constants of nitrate complexes of trivalent plutonium in aqueous and tributyl phosphate solutions (1960)
    Springer
    Atomic energy 6 (1960), S. 293-296 
    Details
    ISSN: 1573-8205
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Notes: Abstract The extractability of nitrate complexes of trivalent plutonium from an aqueous phase at various concentrations was investigated. It was shown that tributyl phosphate (TBP) will extract trivalent plutonium from nitric acid solutions in the form of Pu(NO3)3. TBP at nitrate ion concentrations up to 1.2 M. Under the conditions studied, the distribution coefficient of trivalent plutonium depended very little on the concentration of hydrogen ions. The stability constants of the complexes Pu(NO3)3 · 3TBP, Pu(NO3)3, Pu(NO3) 2 + and Pu(NO3)2+ were determined and equaled 0.75 ± 0.1; 14.4 ± 0.8; 14.3 ± 0.8 and 5.9 ± 0.5.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01479734
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Extraction properties of diisoamyl methylphosphinite (1961)
    Springer
    Atomic energy 7 (1961), S. 728-734 
    Details
    ISSN: 1573-8205
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Notes: Abstract The properties of one of the new, efficient extractants for uranium, diisoamyl methylphosphinate (DAMP), are described. It was shown that uranyl nitrate is extracted from nitric acid solutions by this extractant with considerably higher distribution coefficients than tributyl phosphate (TBP). The extraction of uranyl nitrate and HNO3 with DAMP solutions in hydrogenated kerosene was studied. It was shown that uranyl nitrate is extracted in the form of the complex [UO2(NO3)2 (DAMP)2], whose stability constant equals 2540±200, and HNO3 is extracted in the form of the compound HNO3 DAMP, whose stability constant is 0.30±0.03.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01479963
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Bibliography (1964)
    Springer
    Atomic energy 17 (1964), S. 1178-1179 
    Details
    ISSN: 1573-8205
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01116339
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    Paper (German National Licenses)
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