Study of reaction of curium oxy-compound formation in molten chlorides

The method of potentiometric titration using oxygen sensors with solid electrolyte membrane was applied to study the interaction of curium cations with oxygen anions in the molten alkali metal chlorides in the temperature range of 450―850 °C depending on oxy-acidity of melt. Assumptions were made concerning the ion and phase composition of the obtained compounds and the chemical reactions that take place in the melts at high temperature. Basic thermodynamic values were calculated for the resultant curium oxy-compounds.