Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride
The reactions between sulfur tetrafluoride and uranium trioxide and sulfur tetrafluoride and uranyl fluoride were studied between 255 and 370 deg by following the change in weight of the solid phase using a thermobalance. The rate of production of uranium hexafluoride was in agreement with the kinetics expected for reaction between a gas and a solid at a continuously diminishing spherical interface. The rate of reaction was temperature dependent. The activation energies for reaction of sulfur tetrafluoride with uranium trioxide and uranyl fluoride are, respectively, 6.0 and 32.0 kcal/mole. The rate of reaction with uranyl fluoride was dependent upon the partial pressure of sulfur tetrafluoride. A 1.55 exponent was found. Finally, a minimum gas velocity was found above which the reaction rate was independent of the velocity of gaseous reactant past the solid.
- Research Organization:
- Argonne National Lab., Ill.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-000106
- OSTI ID:
- 4836960
- Journal Information:
- Journal of Physical Chemistry, Vol. 65, Issue 10; Other Information: Orig. Receipt Date: 31-DEC-62; ISSN 0022-3654
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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