Measuring the rate constant of the reaction between chlorine atoms and CHF2Br by Cl atom resonance fluorescence
| Autor: | A. I. Spasskii, E. M. Trofimova, Igor Larin, N. G. Proncheva |
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| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Chemistry Chlorine atom Analytical chemistry General Chemistry Activation energy 010501 environmental sciences Photochemistry 01 natural sciences Catalysis Computer Science Applications Reaction rate constant Resonance fluorescence Modeling and Simulation Torr Mole Atom 0105 earth and related environmental sciences |
| Zdroj: | Kinetics and Catalysis. 57:308-312 |
| ISSN: | 1608-3210 0023-1584 |
| DOI: | 10.1134/s0023158416030101 |
| Popis: | The rate constant of the reaction between Cl atoms and CHF2Br has been measured by chlorine atom resonance fluorescence in a flow reactor at temperatures of 295–368 K and a pressure of ~1.5 Torr. Lining the inner surface of the reactor with F-32L fluoroplastic makes the rate of the heterogeneous loss of chlorine atoms very low (k het ≤ 5 s–1). The rate constant of the reaction is given by the formula k = (4.23 ± 0.13) × 10–12 e (–15.56 ± 1.58)/RT cm3 molecule–1 s–1 (with the activation energy in kJ/mol units). The possible role of this reaction in the extinguishing of fires producing high concentrations of chlorine atoms is discussed. |
| Databáze: | OpenAIRE |
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