Thermodynamic Stability of UMoO6 by the Transpiration Method
- 1 May 1985
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 68 (5) , 232-235
- https://doi.org/10.1111/j.1151-2916.1985.tb15314.x
Abstract
The equilibrium vaporization of UMoO6(s) in dry air was studied by the transpiration method in the temperature interval 1110°≤ T (K) ≤ 1250°. Apparent pressure of the trimer measured over the two‐phase mixture UMoO6+ U3O8, with dry air as the carrier gas, was used to calculate the partial pressure of the trimer, (MoO3)3(g). In accordance with the vaporization reaction (UMoO6) = 1/3(U3O8) + 1/6(MoO3)3(g)+ 1/6O2 (g), the free energy of formation of UMoO6)(s) is given by (δ G° in kJ‐mol−1) δ G° (UMoO6) = (−1962 ± 10) + (0.463 ± 0.008) TKeywords
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