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Kinetics of the addition reaction of methyl radicals with nitric oxide studied by pulse radiolysis combined with infrared diode laser spectroscopy

✍ Scribed by Jerzy T. Jodkowski; Emil Ratajczak; Alfred Sillesen; Palle Pagsberg

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 584 KB
Volume: 203
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(93)85298-3

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✦ Synopsis

The reaction CHs+NO (+M) +CH,NO (+M) was initiated by pulse radiolysis of acetone/nitric oxide mixtures and the kinetics of methyl radicals was studied by time-resolved infrared absorption spectroscopy. The rate constant was found to be strongly pressure dependent in the range of p( M ) =6.5-150 mbar at 298 K with M = acetone as the third body. The experimental results are represented in terms of a fall-off curve centered at 37 mbar with limiting high-and low-pressure rate constants of k ,,,=(6.6i0.9)~10~~(T/300)~~~M-'s-~and~,~/[M]=(4.4f0.4)X10'~~(T/300)-~~"M~~~~', respectively.

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