### 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 |

### Fingerprint

### 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

### 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

**Sorption and desorption of BrF
_{3}
on NaF : Studies on thermodynamics and kinetics.** / Zherin, I. I.; Rudnikov, A. I.; Ostvald, R. V.; Sobolev, V. I.; Amelina, G. N.

Research output: Contribution to journal › Article

_{3}on NaF: Studies on thermodynamics and kinetics',

*Journal of Fluorine Chemistry*, vol. 221, pp. 25-33. https://doi.org/10.1016/j.jfluchem.2019.03.003

_{3}on NaF: Studies on thermodynamics and kinetics. Journal of Fluorine Chemistry. 2019 May 1;221:25-33. https://doi.org/10.1016/j.jfluchem.2019.03.003

}

TY - JOUR

T1 - Sorption and desorption of BrF 3 on NaF

T2 - Studies on thermodynamics and kinetics

AU - Zherin, I. I.

AU - Rudnikov, A. I.

AU - Ostvald, R. V.

AU - Sobolev, V. I.

AU - Amelina, G. N.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - 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.

AB - 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.

KW - Bromine trifluoride

KW - Desorption

KW - Iodine pentafluoride

KW - Sodium fluoride

KW - Sorption

KW - Uranium hexafluoride

UR - http://www.scopus.com/inward/record.url?scp=85063283337&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063283337&partnerID=8YFLogxK

U2 - 10.1016/j.jfluchem.2019.03.003

DO - 10.1016/j.jfluchem.2019.03.003

M3 - Article

AN - SCOPUS:85063283337

VL - 221

SP - 25

EP - 33

JO - Journal of Fluorine Chemistry

JF - Journal of Fluorine Chemistry

SN - 0022-1139

ER -