DETERMINATION OF ENTHALPY OF FORMATION OF GASEOUS URANIUM PENTAFLUORIDE

Authors
NIKITIN MI TSIRELNIKOV VI
Citation
Mi. Nikitin et Vi. Tsirelnikov, DETERMINATION OF ENTHALPY OF FORMATION OF GASEOUS URANIUM PENTAFLUORIDE, High temperature, 30(5), 1992, pp. 730-735
Citations number
22
Categorie Soggetti
Physics, Applied
Journal title
High temperature → ACNP
ISSN journal
0018151X
Volume
30
Issue
5
Year of publication
1992
Pages
730 - 735
Database
ISI
SICI code
0018-151X(1992)30:5<730:DOEOFO>2.0.ZU;2-Z
Abstract
Knudsen's effusion method and mass-spectroscopic analysis of the vapor composition were used in the temperature range 1017-1109 K to investi gate the equilibrium UF4 (g) + 1/2NiF2 (cr) = UF5 (g) + 1/2Ni (cr), DE LTA(r)H0(0) = 168 +/- 0.3 kJ/mole. Based on an analysis of the obtaine d and literature data, we suggest the values D0(0)(UF4-F) = 387.2 +/- 2.4 and DELTA(f)H0(0)(UF5 (g)) = -1913.9 +/- 15.2 kJ/mole. Using these data, we calculated the values D0(0)(UF5-F) = 305.7, D0(0)(Ag-F) = 31 60, D0(0)(CuF-F) = 3.52.4, and D0(0)(Cu-F) = 413.0 kJ/mole.