, Volume 47, Issue 2, pp 153–156 | Cite as

Thermolysis of Urea Complexes of Uranyl Nitrate

  • N. N. Kostyuk


Quantitative parameters of thermolysis of uranyl nitrate urea complexes, [UO2(NO3)2{(NH2)2·CO}2], [UO2(H2O){(NH2)2CO}4](NO3)2, and [UO2(H2O){(NH2)2CO}5](NO3)2 at 175, 200, and 225°C were measured. Thermolysis of [UO2(NO3)2{(NH2)2CO}2] at 200°C affords the biuret complex of uranyl nitrate in a 90% yield. The urea ligands in the hydrated complexes completely transform into biuret at 175°C. Thermolysis of [UO2(H2O){(NH2)2CO}5](NO3)2 yields the biuret-cyanurate complexes of uranyl nitrate. The features of thermolysis of the uranyl nitrate complexes originate from the chemical transformations of urea at elevated temperatures.


Nitrate Hydrated Urea Elevated Temperature Uranyl 
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Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • N. N. Kostyuk
    • 1
  1. 1.Sevchenko Institute of Applied Physical ProblemsBelarussian State UniversityMinskBelarus

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