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On the use of CO as scavenger for OH radicals in the ozonolysis of simple alkenes and isoprene

โœ Scribed by Roland Gutbrod; Stefan Meyer; M. Muhibur Rahman; Ralph N. Schindler

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
149 KB
Volume
29
Category
Article
ISSN
0538-8066

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โœฆ Synopsis

The OH radical yields generated in the ozonolysis of ethene (ET), propene (PR), cis-2-butene (CB), trans-2-butene (TB), 2,3-dimethyl-2-butene (TME), and isoprene (ISP) in the presence of 20 Vol.% O 2 have been determined in a darkened glass reactor at 1 bar total pressure. The hydroxyl radicals formed were scavenged by an excess of CO added to the systems. The O 2 present converted H atoms formed in this reaction into HO 2 . From measurements of the increase in CO 2 generation by FTIR the OH formation yields were determined to be 0.08 (ET), 0.18 (PR), 0.17 (CB), 0.24 (TB), 0.36 (TME), and 0.19 (ISP), respectively, per molecule of reacted ozone. The combined error in the OH determinations is estimated to be ฯฝ10%.

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