Formation of OH Radicals in the Gas-Phase Reaction of Propene, Isobutene, and Isoprene with O 3 : Yields and Mechanistic Implications
β Scribed by Neeb, Peter; Moortgat, Geert K.
- Book ID
- 127317805
- Publisher
- American Chemical Society
- Year
- 1999
- Tongue
- English
- Weight
- 128 KB
- Volume
- 103
- Category
- Article
- ISSN
- 1089-5639
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π SIMILAR VOLUMES
The gas-phase reaction of NO 3 radicals with isoprene was investigated under flow conditions at 298 K in the pressure range 6.8 Ο½ P(mbar) Ο½ 100 using GC-MS/FID, direct MS, and long-path FT-IR spectroscopy as detection techniques. By means of a relative rate method, the rate constant for the primary
3-Methylfuran has been identified as a product of the gas-phase reaction of the OH radical with isoprene, and under simulated atmospheric conditions a formation yield of 0.044 -t 0.006 was determined. In an analogous manner, the OH radical reaction with 1,3-butadiene formed furan with a yield of 0.0
Using relative rate methods, rate constants have been measured for the gas-phase reactions of 3-methylfuran with NO, radicals and 0, at 296 ? 2 K and atmospheric pressure of air. The rate constants determined were (1.31 ? 0.46) X lo-'' cm' molecule-' s-' for the NO, radical reaction and (2.05 ? 0.52