Reaction of Criegee Intermediates with Water VaporAn Additional Source of OH Radicals in Alkene Ozonolysis?

Autor:	Suzanne E. Paulson, Keith T. Kuwata, Myeong Y. Chung, Amber D. Converse, Alam S. Hasson, Debra Krohn
Rok vydání:	2003
Předmět:	chemistry.chemical_classification Reaction mechanism Ozonolysis Chemistry Alkene Radical Yield (chemistry) Humidity Relative humidity Physical and Theoretical Chemistry Photochemistry
Zdroj:	The Journal of Physical Chemistry A. 107:6176-6182
ISSN:	1520-5215 1089-5639
DOI:	10.1021/jp0346007
Popis:	The yields of OH radicals from the ozonolysis of ethene and trans-2-butene under dry and humid conditions (0% and 65% relative humidity, respectively) were measured by the small-ratio relative rate technique. The OH yields from both alkenes are found to be independent of the humidity within the error limits of the experiments. This suggests that the OH yield from the reaction of Criegee intermediates with water is less than 30%. These findings are supported by Master equation calculations that are consistent with the major product from the reaction of Criegee intermediates with water being the hydroxyalkyl hydroperoxide (RCH(OH)OOH), with a smaller contribution from OH. Implications of these results for both the fundamental reaction mechanism of ozone-alkene reactions and the fate of Criegee intermediates in the troposphere are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b34c3c229c84fe9ff3c2125bb4b65181 https://doi.org/10.1021/jp0346007 Zobrazit plný text záznamu