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Relative-rate study of the gas-phase reaction of hydroxy radicals with difunctional organic nitrates at 298 K and atmospheric pressure

✍ Scribed by T. Zhu; I. Barnes; K. H. Becker

Book ID
104625233
Publisher
Springer Netherlands
Year
1991
Tongue
English
Weight
781 KB
Volume
13
Category
Article
ISSN
0167-7764

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✦ Synopsis

Rate coefficients for the reactions of difunctional nitrates with atmospherically important OH radicals are not currently available in the literature. This study represents the first determination of rate coefficients for a number of C(3) and C(4) carbonyl nitrates and dinitrates with OH radicals in a 38 1 glass reaction chamber at 1000 mbar total pressure of synthetic air by 298 f 2 K using a relative kinetic technique.

The following rate coefficients (in units of lo-'? cm" molecule-' s-l) were obtained: l&propandioI dinitrate, cO.31; 1,2-butandiol dinitrate, 1.70 + 0.32; 2,3-butandiol dinitrate, 1.07 kO.26; a-nitrooxyacetone, <0.43; l-nitrooxy-2-butanone, 0.91 kO.16; 3-nitrooxy-2-butanone, 1.27 kO.14; 1,4-dinitrooxy-2-butene, 15.10 + 1.45; 3,4-dinitrooxy-1-butene, 10.10 & 0.50. The possible importance of reaction of OH as an atmospheric sink for the compounds compared to other loss processes is considered.

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