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Kinetics of the gas-phase reactions of OH radicals with a series of α,β-unsaturated carbonyls at 299 ± 2 K

✍ Scribed by Roger Atkinson; Sara M. Aschmann; James N. Pitts Jr.

Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
351 KB
Volume
15
Category
Article
ISSN
0538-8066

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✦ Synopsis

Relative rate constants for the reaction of OH radicals with a seqies of cY,P-unsaturated carbonyls have been determined at 299 & 2 K, using methyl nitrite photolysis in air as a source of OH radicals. Using a rate constant for the reaction of OH radicals with propene of 2.52 X 10-l' cm3/molec.s, the rate constants obtained are (X 10" cm3/molec.s: acrolein, 1.83 f 0.13; crotonaldehyde, 3.50 f 0.40; methacrolein, 2.85 f 0.23; and methylvinylketone, 1.88 f 0.14. These data, which are necessary input to chemical computer models of the NO,-air photooxidations of conjugated dialkenes, are discussed and compared with literature values.

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