SOLUBILITY OF NOBLE GASES IN MOLTEN FLUORIDES. II. IN THE LiF-NaF-KF EUTECTIC MIXTURE
Solubilities of He, Ne, and Ar were measured at pressures from l to 2 atmospheres in a mixture of LiF, NaF, and KF (46.5-11.5-42.0 mole%) at 600, 700, and 800 deg C. The solubilities increase linearly with gas pressure, decrease with increasing atomic weight (radius) of the solute, and increase with increasing temperature. Henry's law constants in moles of solute (cm/sup 3/ of solution)(atmosphere) at 600 deg C are 11.3 plus or minus 0.7 x 10/sup -8/, 4.36 plus or minus 0.20 x 10/sup -8/, and 0.90 plus or minus 0.04 x 10/sup -08/ and the enthalpies of solution are 8.0, 8.9, and 12.4 kcal/mole for He, Ne, and Ar, respect0vely. A model which equates the free energy of solution of the gas to the free energy of formation of holes the size of the gas molecules in a continuous fluid having the same surface tension at the solvent yields solubility values which are in good agreement with those observed. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-017899
- OSTI ID:
- 4241715
- Journal Information:
- Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 63; ISSN JPCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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