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Rate constants for the gas-phase reaction of ozone with unsaturated oxygenates

✍ Scribed by Eric Grosjean; Daniel Grosjean

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 160 KB
Volume: 30
Category: Article
ISSN: 0538-8066
DOI: 10.1002/(sici)1097-4601(1998)30:1<21::aid-kin3>3.0.co;2-w

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✦ Synopsis

The gas-phase reaction of ozone with a series of unsaturated oxygenates and with 1-pentene has been studied at ambient T (287-296 K) and atm. of air. Reaction rate p ϭ 1 constants, in units of cm 3 molecule Ϫ1 s Ϫ1 , are for 2 (5H)-furanone, Ϫ18 10 0.22 Ϯ 0.05 for methacrolein, for crotonaldehyde, for methylvinyl ke-1.08 Ϯ 0.20 1.74 Ϯ 0.20 5.84 Ϯ 0.39 tone, for methyl acrylate, for vinyl acetate, for cis-3-hexenyl 1.05 Ϯ 0.15 3.20 Ϯ 0.47 59.0 Ϯ 8.7 acetate, for ethylvinyl ether, for linalool, and for 1-pentene. 154 Ϯ 30

Ն(315 Ϯ 23) 10.9 Ϯ 1.4 The results are compared to literature data for the compounds studied and for other unsaturated oxygenates, and are discussed in terms of reactivity toward ozone as a function of the nature, number, and position of the oxygen-containing substituents 9 CHO, 9C(O)R, 9 C(O)OR, and 9OC(O)R. Atmospheric implications are briefly examined.

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