THE FLUORIDES OF URANIUM. IV. KINETIC STUDIES OF THE FLUORINATION OF URANIUM TETRAFLUORIDE BY CHLORINE FLUORIDE

Journal Article · Wed Apr 01 00:00:00 EST 1959 · J. Inorg. & Nuclear Chem.

DOI:https://doi.org/10.1016/0022-1902(59)80189-5· OSTI ID:4242315

Labaton, V Y

The reaction between uranium tetrafluoride and chlorine trifluoride was studied between 17 and 193 deg C using the same basic technique as was used in an investigation of the uranium tetrafluoride-fluorine reaction. This consists essentially of following the change in weight of the solid phase using a spring balance. The mechanism and kinetics of reaction were shown to be suhstantially the same for chlorine trifluoride as fluorine. The reaction rate passes through a maximum at 105 deg C, falls to a minimum at 148 deg C and then rises again. An explanation of this unusual behavior is suggested. In the regions 17 to 58 deg C and 156 to 194 deg C, within the limits of experimental accuracy, the Arrhenius equation relates the reaction-rate constant and the temperature of reaction; the activation energies determined for uranium tetrafluoride prepared by hydrofluorination were 5.6 and 3.4 kcal per mole, respectively. A linear relationship is shown to exist near ambient temperature between the reaction rate and partial pressure of chlorine trifluoride. In the velocity range examined, gas velocity had no effect on the reaction rate. (auth)

• Research Organization: United Kingdom Atomic Energy Authority, Capenhurst Works, Chester, Eng.
• NSA Number: NSA-13-015100
• OSTI ID: 4242315
• Journal Information: J. Inorg. & Nuclear Chem., Vol. Vol: 10; Other Information: Orig. Receipt Date: 31-DEC-59
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
ATOMIC MODELS
CHEMICAL REACTIONS
CHLORINE FLUORIDES
CRYSTALS
DIAGRAMS
ENERGY LEVELS
EQUATIONS
EXCITATION
FLUORINATION
GAS FLOW
GASES
INSTRUMENTS
LABORATORY EQUIPMENT
LATTICES
MACHINE PARTS
MEASURED VALUES
PRESSURE
REACTION KINETICS
SOLIDS
TABLES
TEMPERATURE
THERMODYNAMICS
URANIUM TETRAFLUORIDE
WEIGHT