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The reaction of O(1D) with CH4

✍ Scribed by Raymond I. Greenberg; Julian Heicklen

Publisher: John Wiley and Sons
Year: 1972
Tongue: English
Weight: 704 KB
Volume: 4
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550040406

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✦ Synopsis

The room-temperature photolysis of N2O (10-100 torr) at 2139 A to produce O(lD)

The reactions of O ( l D ) with CH, has been studied in the presence of CHI (10-891 torr). were found to be (4)

The method of chemical difference was used to measure the rate constant ratio kr/(k2 + k3), where reactions (2) and ( 3) are (2)

The CHI radicals produced in reaction (4) react with the 0 2 and NO produced in reactions

(2) and (3). Thus, near the endpoint of the internal titration, @( CzHc] gives an accurate measure of k4/(kz + k3). For the translationally energetic O(lD) atoms produced in the photolysis, k , / ( k ~ + k3) = 2.28 f 0.20. However, if He is added to remove the excess translational energy, then k4/(k2 -+ k3) drops to 1.35 f 0.3.

O ( l D )

4-Nz0 + Nz + 0 2

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