V. V. Azatyan, V. M. Prokopenko, N. N. Smirnov, S. K. Abramov
{"title":"The Determining Role of Heterogeneous Reactions of Atoms and Radicals in the Spread of a Flame","authors":"V. V. Azatyan, V. M. Prokopenko, N. N. Smirnov, S. K. Abramov","doi":"10.1134/S003602442470273X","DOIUrl":null,"url":null,"abstract":"<p><b>Abstract</b>—The dependence of flame propagation characteristics on heterogeneous reactions of atoms and radicals at atmospheric pressure has been established. It is noted that in addition to participating in the termination of reaction chains, adsorbed hydrogen atoms experience heterogeneous chain development: they react with O<sub>2</sub> with the formation of HO<sub>2</sub> radicals, as determined using laser magnetic resonance. In the flame, HO<sub>2</sub> radicals with H atoms form OH radicals; thus, heterogeneous chain development occurs. The flame changes the chemical properties of the surface. It is concluded that the identified mechanism and the equations obtained on its basis quantitatively describe the observed patterns.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"120 - 129"},"PeriodicalIF":0.7000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S003602442470273X","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract—The dependence of flame propagation characteristics on heterogeneous reactions of atoms and radicals at atmospheric pressure has been established. It is noted that in addition to participating in the termination of reaction chains, adsorbed hydrogen atoms experience heterogeneous chain development: they react with O2 with the formation of HO2 radicals, as determined using laser magnetic resonance. In the flame, HO2 radicals with H atoms form OH radicals; thus, heterogeneous chain development occurs. The flame changes the chemical properties of the surface. It is concluded that the identified mechanism and the equations obtained on its basis quantitatively describe the observed patterns.
期刊介绍:
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.