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The rate constants for the reaction of the hydroxyl radical with methyl, n-propyl, and n-butyl nitrites

✍ Scribed by Donald L. Baulch; Ian M. Campbell; Sandra M. Saunders

Publisher: John Wiley and Sons
Year: 1985
Tongue: English
Weight: 528 KB
Volume: 17
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550170402

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✦ Synopsis

The kinetics of the reaction of OH radicals with methyl, n-propyl, and n-butyl nitrite OH + RON0products have been studied in a discharge flow system under pseudo first-order conditions. The OH radicals were generated by the reaction of H atoms with NO2 and the concentration of OH, monitored by resonance fluorescence, was followed as a function of time in an excess of each nitrite. Values of k(CH30NO) = (0.6 5 0.09) x lo9 dm3 molF' s-', k ( n -C3H,0NO) = (1.39 5 0.20) x lo9 dm3 mol-' s-', and k(n -C,HgONO) = (2.89 ? 0.43) x lo9 dm3 mol-' s-' a t 295 K were obtained. These results agree with previous relative rate measurements from this laboratory but the value for k(CH,ONO) is a factor of 7 greater than the value obtained by relative rate measurements elsewhere using a different OH source.

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