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  1. No Access

    Article

    Kinetics of UO3 dissolution in nitric acid saturated 30% TBP in a hydrocarbon diluent

    The kinetics of UO3 dissolution in nitric acid saturated 30 vol % TBP in a hydrocarbon diluent was studied. In the temperature interval 18–40°C, UO3 powders fully dissolve in the organic solvent within 5–20 min. ...

    F. A. Dorda, V. V. Lazarchuk, V. A. Matyukha, M. V. Sirotkina… in Radiochemistry (2010)

  2. No Access

    Article

    Mechanism and kinetics of thermal decomposition of uranyl nitrate hexahydrate under the nonisothermal conditions

    Thermal decomposition of UO2(NO3)2·6H2O to U3O8 was studied by thermogravimetric (TG), differential thermogravimetric (DTG), and differential thermal (DTA) analyses in combination with gaschromatographic and chem...

    R. D. Kozlova, V. A. Matyukha, N. V. Dedov in Radiochemistry (2007)

  3. No Access

    Article

    Influence of urea concentration in nitric acid solutions of uranium on precipitation of ammonium polyuranates with ammonia

    A factorial study is made of precipitation of ammonium polyuranates from nitric acid solutions of uranium in the presence of urea, including measuring the effects of the temperature and urea and uranium concen...

    V. G. Balakhonov, F. A. Dorda, V. S. Zagumennov, V. V. Lazarchuk… in Radiochemistry (2004)

  4. No Access

    Article

    Calorimetric study of thermal decomposition of lithium hexafluorophosphate

    Enthalpy of formation of lithium hexafluorophosphate was calculated based on the differential scanning calorimetry study of heat capacity and thermal decomposition. It was found that thermal decomposition of LiPF

    K. S. Gavritchev, G. A. Sharpataya… in Journal of Thermal Analysis and Calorimetry (2003)

  5. No Access

    Article

    Interphase potential difference in processes of extraction-reextraction of actinoids and nitric acid using neutral organophosphorus compounds

    Analysis of the electrochemical phenomena arising in the processes of extraction-reextraction demonstrated that they are followed by interphase potential difference which can reach a few hudreds millivolt. Dur...

    V. M. Kondakov, V. A. Matyukha, E. N. Semyonov in Czechoslovak Journal of Physics (2003)

  6. No Access

    Article

    Influence of acid-base and oxidation-reduction reactions on the distribution of stable impurities and radionuclides in “soil-liquid radioactive waste” system

    During underground disposal of liquid radioactive wastes acid-base and oxidation-reduction reactions proceed between the soil and the solutions, resulting in the changes of the solution pH, oxidation-reduction...

    A. S. Kozyrev, V. A. Matyukha, E. N. Semyonov… in Czechoslovak Journal of Physics (2003)

  7. No Access

    Article

    Simulation of Radiation-Chemical Decomposition of Organic Impurities in Liquid Radioactive Wastes at Depth Disposal

    A mathematical model is developed to describe the behavior of organic impurities in liquid radioactive wastes at depth geological disposal. The model includes description of the migration of radionuclides and ...

    V. G. Balakhonov, A. A. Zubkov, V. A. Matyukha, A. N. Zhiganov… in Radiochemistry (2001)

  8. No Access

    Article

    Technology of getting of microspheric thorium dioxide

    There has been proposed a technique for getting granulated thorium dioxide from its salts solutions according to the cryogenic technology by the method of a solid phase conversion. It includes the following op...

    V. G. Balakhonov, V. A. Matyukha, N. P. Saltan… in Czechoslovak Journal of Physics (1999)

  9. No Access

    Article

    Structural investigations of zirconia powders obtained by HF-plasmochemical denitration

    N. V. Dedov, Yu. F. Ivanov, F. A. Dorda, A. V. Paul', A. V. Zav'yalov… in Glass and Ceramics (1991)