Thermal Decomposition of Plutonium Hexafluoride

Shigeo TSUJIMURA; Kenmei HIRANO; Akira TAKAHASHI; Ginji FUJISAWA

doi:10.3327/jnst.9.534

Shigeo TSUJIMURA, Kenmei HIRANO, Akira TAKAHASHI, Ginji FUJISAWA

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Keywords: thermal decomposition, plutonium hexafluoride, fluoride volatility process, radiation decomposition, two-part equation, pressure dependence, medium temperature, catalytic surface reaction, effective surface area, activation energy, thermodynamic properties, plutonium fluorides

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1972 Volume 9 Issue 9 Pages 534-537

DOI https://doi.org/10.3327/jnst.9.534

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Abstract

The thermal decomposition of PuF₆ in the temperature range from 100° to 160°C was studied. At 100° and 120°C, no decomposition was detected. At 140° and 160°C, the rate of decomposition during reaction lasting up to 20hr, and the dependence of the decomposition on the initial PuF₆ pressure were determined. The results are explained by assuming that the rate of decomposition is proportional to the 0.4-th power of PuF₆ pressure. The activation energy of the reaction was found from calculation to be 14.8kcal/mole.

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