The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The H + O 2 → OH + O reaction was reexamined by monitoring OH radical concentrations using cw UV laser absorption spectroscopy in H 2 -O 2 -Ar test gas heated by 1850-3550 K shock waves. The rate coefficient expression (1.0 ± 0.1) 10 14 exp (- 7690 ± 250 K/T) cm 3 mol -1 s -1 was derived. Fitting the present data together with those of Shin and Michael [J. Chem. Phys. 95 (1991) 262] gave k 4 = (7.6 ± 0.7) 10 13 exp (- 7065 ± 140 K/T) cm 3 mol -1 s -1 for the temperature range 1100-3550 K. The reverse reaction rate coefficient was found to be (9.3 ± 0.8) 10 12 cm 3 mol -1 s -1 independent of temperature from 1850 to 3550 K.