The standard molar enthalpy of formation of UNCI

Akabori M; Kobayashi F; Hayashi H; Ogawa T; Huntelaar ME; Booij AS; van Vlaanderen P

Journal of Chemical Thermodynamics, Vol.34, No.9, 1461-1466, 2002

DOI10.1016/S0021-9614(02)00200-8 Export Citation

The standard molar enthalpy of formation of UNCI

Akabori M, Kobayashi F, Hayashi H, Ogawa T, Huntelaar ME, Booij AS, van Vlaanderen P

The enthalpies of solution of UNCl(s) and a mixture of UCl4 and NH4Cl in (0.76 mol (.) dm(-3) HCl + 0.03 mol (.) dm(-3) FeCl3) have been measured. From these values the standard molar enthalpy of formation of UNCl(s) has been derived: Delta(f)H(m)(o)(UNCl, s, 298.15 K) = -(559 +/- 4) kJ (.) mol(-1).

Keywords:calorimetry;enthalpy of formation;enthalpy of solution;uranium nitrogen chloride;pyrochemistry;electrorefining