AQUEOUS SYSTEMS AT HIGH TEMPERATURE. IV. COMPOSITIONS OF LIGHT- AND HEAVY- LIQUID PHASES IN THE SYSTEMS UO$sub 3$-SO$sub 3$-H$sub 2$O AND UO$sub 3$-SO$sub 3$-D$sub 2$O, 280-350 C
ABS>The system UO/sub 3/- SO/sub 3/- H/sub 2/O at high temperature is characterized by a range of compositions in which liquid-liquid immiscibility occurs. Some equilibrium compositions of the two liquid phases with vapor present in this system and its D/sub 2/O analogus were determined from 280 to 350 deg . The nature of the equilibrium is unusual since at 350 deg in certain parts of the systems the light-liquid phase, 0.02 to 0.1 molal in SO/sub 3/, is in equilibrium with a heavy-liquid phase, 9 molal in SO/sub 3/. The light-liquid phases contain an excess of free H/sub 2/SO/sub 4/ whereas the heavy-liquid phases either are stoicheiometric in UO/sub 2/SO/sub 4/ or contain a small excess of free H/sub 2/SO/sub 4/ or UO/sub 3/. Comparative liquid-phase compositions in the analogous D/sub 2/O system showed little difference in composition in the heavy-liquid phases but indicated approximately 10 per cent lower saturation molal ratios, m/sub uo3/ m/sub so3/, for the light-liquid phases. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- NSA Number:
- NSA-16-018895
- OSTI ID:
- 4830558
- Journal Information:
- J. Inorg. & Nuclear Chem., Vol. Vol: 23; Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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