Abstract
The thermodynamic properties of uranium nitride chloride, UNCl(s) have been measured. From the low-temperature adiabatic heat capacity measurements in the temperature range (5 to 420) K, the values C°p,m and S°p,m, (68.08 ± 0.10) JK-1·mol-1 and (96.54 ± 0.10) J·K-1·mol-1, respectively, have been obtained. The high-temperature function has been derived by use of two separate techniques. Enthalpy increments has been determined by drop-calorimetry in the temperature range (399.2 to 932.6) K and the heat capacity in the temperature range (305 to 1086) K has been measured by DSC. Combination of these results with the earlier determined standard molar enthalpy of formation of ΔfH°m(UNCl, s 298.15 K) = (559 ± 4) kJ·mol-1, the thermodynamic properties have been calculated up to T = 1100 K. Furthermore, in the heat capacity measurements a phase transition at T = 32 K has been observed, the nature of this transition has been studied by neutron diffraction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
