The oxidation of methyl radicals at room temperature

✍ Scribed by D. A. Parkes

• Publisher: John Wiley and Sons
• Year: 1977
• Tongue: English
• Weight: 1024 KB
• Volume: 9
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550090313

✦ Synopsis

Using the technique of molecular modulation spectrometry, we have measured directly the rate constants of several reactions involved in the oxidation of methyl radicals at room temperature:

(1)

kl is in the fall-off pressure regime at our experimental pressures (20-760 torr) where the order lies between second and third and we obtain an estimate for the second-order limit of (1.2 f 0.6) X cm3/molec . sec, together with third-order rate constants of (3.1 f 0.8) X 10-31 cm6/molec2 . sec with N, as third body and (1.5 f 0.8) X with neopentane; @a)

we cannot differentiate between k,. and kZe and we conclude kza + ( k 2 J = (3.05 f 0.8) X 10F3 cm3/molec . sec and k2b = (1.6 f 0.4) X cm3/molec . sec;

(3) CH3 + CH302 --t 2CHaO k3 = (6.0 f 1.0) X 10-11 cm3/molecsec.