### Abstract

Temperature dependence of bromine trifluoride vapor pressure over its adduct with sodium fluoride has been determined; the adduct normal dissociation temperature has been determined. Kinetics of sorption and desorption processes in BrF
_{3}
(gas)–NaF(solid) system have been studied. The equation was proposed to illustrate the link between forward reaction rate (К
_{а}
) described by Arrhenius equation and experimental value (K
_{i}
): K
_{i}
= K
_{а}
⋅ (P
_{a}
/P
_{eq}
)
^{m}
, where Ki – observed reaction rate constant, K
_{a}
– forward reaction rate constant described by Arrhenius equation; P
_{a}
– partial pressure of BrF
_{3}
; P
_{eq}
– equilibrium pressure of BrF
_{3}
above BrF
_{3}
⋅3NaF; m – factor characterizing the interaction area of BrF
_{3}
with NaF. The application of this equation makes possible to determine the true reaction rate values and reaction activation energy in chemisorption terms; it also helps to calculate the degree BrF
_{3}
sorption on NaF reaction at different temperatures and adsorbate pressures. The possibility of sorption-desorption separation of bromine trifluoride – uranium hexafluoride – iodine pentafluoride system with use of sodium fluoride was shown.

Original language | English |
---|---|

Pages (from-to) | 25-33 |

Number of pages | 9 |

Journal | Journal of Fluorine Chemistry |

Volume | 221 |

DOIs | |

Publication status | Published - 1 May 2019 |

### Keywords

- Bromine trifluoride
- Desorption
- Iodine pentafluoride
- Sodium fluoride
- Sorption
- Uranium hexafluoride

### ASJC Scopus subject areas

- Biochemistry
- Environmental Chemistry
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry

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## Cite this

_{3}on NaF: Studies on thermodynamics and kinetics.

*Journal of Fluorine Chemistry*,

*221*, 25-33. https://doi.org/10.1016/j.jfluchem.2019.03.003