✦ LIBER ✦

Kinetics of reactions of NH with NO and NO2

✍ Scribed by J.A. Harrison; A.R. Whyte; L.F. Phillips

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 501 KB
Volume: 129
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(86)80356-6

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✦ Synopsis

Ground-state NH radicals were generated by 248 mn KrF laser photolysis of NsH4 and their concentration monitored by laser-induced fluorescence at 336 mn, at total pressures near 1 Torr and temperatures between 269 and 377 K. He, Ar, Ns and NsO were used as carrier gases. Rate constants obtained at 300 K are (1.61 f 0.14) X lo-** for NH + NO2 and (5.78 * 0.64) X lo-"

for NH + NO (units cm3 molecule-1 s-l). For NH + NO the rate constant is independent of temperature over the range studied; for NH + NO2 there is a smalI negative temperature dependence. Within experimental error, results at 300 K are independent of the choice of carrier gas. The results are discussed in terms of a mechanism involving an intermediate MN0 or HNNO2 complex.

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