Mass Spectrometry Study of the Reaction of Fluorine Atoms with Benzene

• Published in: Russian Journal of Physical Chemistry A Vol. 94; no. 10; pp. 2004 - 2009
• Main Authors: Vasiliev, E. S., Volkov, N. D., Karpov, G. V., Savilov, S. V., Morozov, I. I., Lunin, V. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.10.2020; Springer Nature B.V
• Subjects: Atomic properties; Benzene; Chemical Kinetics and Catalysis; Chemistry; Chemistry and Materials Science; Fluorine; Hydrocarbons; Low pressure; Mass spectrometry; Physical Chemistry; Rate constants; Reagents; Scientific imaging; Spectroscopy; mass spectrometry; reaction rate constant; benzene; fluorine
• ISSN: 0036-0244; 1531-863X
• DOI: 10.1134/S0036024420100295

The kinetics of the reaction between fluorine and benzene is studied experimentally at T = 293 K. Competitive reactions are used to find a reaction rate constant. The interaction is studied in a low-pressure flow reactor, and mass spectrometry is used to control the concentration of reagents and products. The reaction between fluorine atoms and methane is used as a competitive one. The ratio of rate constants of the studied reaction ( k 1 ) and a competitive one ( k 2 ) is found for the first time: k 1 / k 2 = 4.4 ± 0.3. A rate constant is calculated for the reaction of fluorine atoms with benzene using literature data: k 1 (293 K) = (2.7 ± 0.5) × 10 ‒10  cm 3 molecule −1 s −1 .