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Formation of Vibrationally Excited HF Molecules during the Inhibition of Hydrogen and Methane Combustion in Oxygen and Air by Dichlorodifluoromethaneстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 ноября 2021 г.
- Авторы: Rodionov A.I., Rubtsov N.M., Vinogradov A.N., Kalinin A.P., Rodionov I.D., Troshin K.Ya, Tsvetkov G.I., Chernysh V.I., Seplyarsky B.S.
- Журнал: Russian Journal of Physical Chemistry B
- Том: 15
- Номер: 4
- Год издания: 2021
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 702
- Последняя страница: 709
- Оригинальные версии: Образование колебательно-возбужденных молекул HF при ингибировании горения водорода и метана в кислороде и воздухе дихлордифторметаном
- DOI: 10.1134/s1990793121040229
- Аннотация: For the first time, vibrationally excited HF molecules (v = 2, 3) are observed with the use of hyperspectrometersin the VIS and NIR ranges in the products of the reactions of oxidation of hydrogen and methanein the presence of Difluorodichloromethane (CF2Cl2). The combustion of hydrogen and methane in airand oxygen at atmospheric and reduced pressure is initiated by a spark discharge. The propagation of theflame front is recorded using high-speed color filming. It is found that during the combustion of methane HF(v = 3) molecules are formed at the moment of reaching the maximum rate of the chemical transformation,i.e., reactions involving CF2Cl2 molecules compete directly with the development of reactive chains. It is alsofound that the concentration limit of the ignition of a premixed hydrogen-air mixture in the presence ofDifluorodichloromethane at a pressure of 1 atm exceeds 10% CF2Cl2, while the concentration limit of theignition of a premixed methane-air mixture is 1% CF2Cl2. This means that the active centers of the combustionof hydrogen and methane, which determine the development of combustion, have a different chemicalnature. It is shown that the set of reactions involving Difluorodichloromethane molecules, leading to the formationof HF (v = 2, 3) during methane combustion, should include active centers of methane combustion.
- Добавил в систему: Калинин Александр Петрович