Laser photolysis of O3/H2 mixtures: The yield of the H+O3→HO2+O reaction

Autor:	A. P. Force, J. R. Wiesenfeld
Rok vydání:	1981
Předmět:	Reaction rate constant Hydrogen chemistry Radical Photodissociation General Physics and Astronomy chemistry.chemical_element Molecule Physical and Theoretical Chemistry Photochemistry Chemical reaction Oxygen Dissociation (chemistry)
Zdroj:	The Journal of Chemical Physics. 74:1718-1723
ISSN:	1089-7690 0021-9606
Popis:	The collisional deactivation of O(2 1D2) by H2 and D2 was found to proceed with a rate constant 1.0±0.1×10−10 cm3 molecule−1 sec−1. The hydrogen atoms produced by O(2 1D2) +H2→OH+H were observed to react with the O3 source molecule with the rate coefficient 3×10−11 cm3 molecule −1 sec−1. Oxygen atoms were seen to be formed with a similar rate and approximately 40% of the reactive encounters of H with O3 were estimated to result in the production of oxygen atoms instead of the expected OH‡ and O2. Possible mechanisms involving collisionally induced dissociation of O3 by vibrationally excited hydroxyl radicals do not appear to account for the observed oxygen atom kinetics in this system, thus suggesting that H+O3→HO2+O may indeed be a significant pathway in the reaction of hydrogen atoms with ozone.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ccb0646062c1b706a4a490b730756f23 https://doi.org/10.1063/1.441260 Zobrazit plný text záznamu