On the Rate Controlling Step of UF<SUB>4</SUB>-BrF<SUB>3</SUB> and U<SUB>3</SUB>O<SUB>8</SUB>-BrF<SUB>3</SUB> Reaction

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概要

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• Experiments were made to determine the rate-controlling step in the reactions of gaseous BrF<SUB>3</SUB> with UF<SUB>4</SUB> and U<SUB>3</SUB>O<SUB>8</SUB> under varying diffusivity of BrF<SUB>3</SUB> brought about by changing the carrier gas.<BR>It was found that, compared with N<SUB>2</SUB> and Ar, He gas used as carrier brings about a reaction rate twice as high. These relative reaction rates are affected by changes in neither linear gas velocity, BrF<SUB>3</SUB> partial pressure, nor reaction temperature; the ratio of the rates between the cases of He, N<SUB>2</SUB> and Ar is roughly equal to the theoretical ratio between the diffusivity of these three gases. The temperature dependence of the reaction rates also corresponds to the theoretical. Hence, the reactions are concluded to be diffusion controlled.

• 一般社団法人 日本原子力学会の論文

著者

• SAKURAI Tsutomu

  Fluorine Chemistry Laboratory, Japan Atomic Energy Research Institute

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