Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride

Johnson, Carl E.; Fischer, Jack

doi:10.1021/j100827a038

Title: Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride

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Abstract

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.

Authors:: Johnson, Carl E.; Fischer, Jack

Publication Date:: Sun Oct 01 00:00:00 EDT 1961

Research Org.:: Argonne National Lab., Ill.

Sponsoring Org.:: USDOE

OSTI Identifier:: 4836960

NSA Number:: NSA-16-000106

Resource Type:: Journal Article

Journal Name:: Journal of Physical Chemistry

Additional Journal Information:: Journal Volume: 65; Journal Issue: 10; Other Information: Orig. Receipt Date: 31-DEC-62; Journal ID: ISSN 0022-3654

Country of Publication:: Country unknown/Code not available

Language:: English

Subject:: CHEMISTRY; ACTIVATION; BALANCES; EXPANSION; FLUORIDES; GASES; MEASURED VALUES; PHASE DIAGRAMS; PRESSURE; REACTION KINETICS; SOLIDS; SULFUR FLUORIDES; SURFACES; TEMPERATURE; THERMAL ANALYSIS; URANIUM HEXAFLUORIDE; URANIUM TRIOXIDE; URANYL COMPOUNDS; URANYL FLUORIDES; VACUUM; VELOCITY; WEIGHT

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                    Johnson, Carl E., and Fischer, Jack. Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride.  Country unknown/Code not available: N. p., 1961. 
        Web.  doi:10.1021/j100827a038.

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                    Johnson, Carl E., & Fischer, Jack. Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride.  Country unknown/Code not available.  https://doi.org/10.1021/j100827a038

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                    Johnson, Carl E., and Fischer, Jack. 1961.  
        "Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride".  Country unknown/Code not available.  https://doi.org/10.1021/j100827a038.

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@article{osti_4836960,

  title        = {Kinetics of the Reaction of Sulfur Tetrafluoride with Uranium Trioxide and Uranyl Fluoride},

  author       = {Johnson, Carl E. and Fischer, Jack},

  abstractNote = {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.},

  doi          = {10.1021/j100827a038},

  url          = {https://www.osti.gov/biblio/4836960},
  journal      = {Journal of Physical Chemistry},

  issn         = {0022-3654},

  number       = 10,

  volume       = 65,

  place        = {Country unknown/Code not available},

  year         = {Sun Oct 01 00:00:00 EDT 1961},

  month        = {Sun Oct 01 00:00:00 EDT 1961}

}

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