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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
Author(s) -
Atkinson Roger,
Aschmann Sara M.,
Pitts James N.
Publication year - 1983
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550150108
Subject(s) - chemistry , methacrolein , radical , crotonaldehyde , reaction rate constant , propene , acrolein , photodissociation , photochemistry , gas phase , kinetics , organic chemistry , catalysis , polymerization , physics , quantum mechanics , methacrylic acid , polymer
Relative rate constants for the reaction of OH radicals with a series of α,β‐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 × 10 −11 cm 3 /molec·s, the rate constants obtained are (× 10 11 cm 3 /molec·s: acrolein, 1.83 ± 0.13; crotonaldehyde, 3.50 ± 0.40; methacrolein, 2.85 ± 0.23; and methylvinylketone, 1.88 ± 0.14). These data, which are necessary input to chemical computer models of the NO x –air photooxidations of conjugated dialkenes, are discussed and compared with literature values.