Reactions of Halogenated Acetic and Propionic Acids with Fluorine Atoms
- Authors: Morozov I.I.1, Vasiliev E.S.1, Butkovskaya N.I.1, Syromyatnikov A.G.1,2, Khomyakova P.S.1, Volkov N.D.1, Morozova O.S.1, Savilov S.V.2,3
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Affiliations:
- Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
- Lomonosov Moscow State University, Moscow, Russia
- Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
- Issue: Vol 42, No 10 (2023)
- Pages: 26-33
- Section: КИНЕТИКА И МЕХАНИЗМ ХИМИЧЕСКИХ РЕАКЦИЙ, КАТАЛИЗ
- URL: https://journals.rcsi.science/0207-401X/article/view/139935
- DOI: https://doi.org/10.31857/S0207401X23100114
- EDN: https://elibrary.ru/PHDRSC
- ID: 139935
Cite item
Abstract
Halogenated acids are of anthropogenic and natural origin and play an important role in atmospheric processes. The global distribution and high stability of halogenated acids is concerning because they are toxic, accumulate in surface waters, and pose a threat to humans and the ecosystem. Knowledge of the reaction mechanism of halogenated acids in the gas phase makes it possible to explain and control many important processes occurring in the atmosphere and during combustion. In this paper, we experimentally study the reactions of atomic fluorine with monochloroacetic, dichloroacetic, trichloroacetic, trifluoroacetic, and pentafluoropropionic acids at a pressure of 1 Torr. The experiments are carried out using a flow reactor connected to a mass spectrometer with a modulated beam. The rate constants of these reactions at room temperature are determined by the method of competing reactions (MCR) using the available published data. It is shown that in this series the fastest reaction is F + CH2ClCOOH. In addition, the temperature dependences of the rate constants are obtained for F + CF3COOH and F + C2F5COOH reactions in the ranges of 258–343 and 262–343 K, respectively.
About the authors
I. I. Morozov
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва
E. S. Vasiliev
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва
N. I. Butkovskaya
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва
A. G. Syromyatnikov
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia; Lomonosov Moscow State University, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва; Россия, Москва
P. S. Khomyakova
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва
N. D. Volkov
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва
O. S. Morozova
Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
Email: igormrzv@gmail.com
Россия, Москва
S. V. Savilov
Lomonosov Moscow State University, Moscow, Russia; Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
Author for correspondence.
Email: igormrzv@gmail.com
Россия, Москва; Россия, Москва
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