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 |
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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
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.
In: Journal of Fluorine Chemistry, Vol. 221, 01.05.2019, p. 25-33.Research output: Contribution to journal › Article
}
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
VL - 221
SP - 25
EP - 33
JO - Journal of Fluorine Chemistry
JF - Journal of Fluorine Chemistry
SN - 0022-1139
ER -