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Gas phase reaction of the hydroxyl radical with the unsaturated peroxyacyl nitrate CH2C(CH3)C(O)OONO2

โœ Scribed by Daniel Grosjean; Edwin L. Williams II; Eric Grosjean

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
567 KB
Volume
25
Category
Article
ISSN
0538-8066

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โœฆ Synopsis

The gas phase reaction of the hydroxyl radical with the unsaturated peroxyacyl nitrate

has been studied at 298 2 2 K and atmospheric pressure. The OH-MPAN reaction rate constant relative to that of OH + n-butyl nitrate is 2.08 2 0.25. This ratio, together with a literature rate constant of 1.74 X cm3 molecule-' s-' for the OH + n-butyl nitrate reaction at 298 K, yields a rate constant of (3.6 2 0.4) X cm3 molecule-' s-' for the OH-MPAN reaction at 298 2 2 K. Hydroxyacetone and formaldehyde are the major carbonyl products. The yield of hydroxyacetone, 0.59 It 0.12, is consistent with preferential addition of OH at the unsubstituted carbon atom. Atmospheric persistence and removal processes for MPAN are briefly discussed.

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