Peroxides in cool flames of isobutane

✍ Scribed by J.W. Falconer; D.E. Hoare; Z. Savaya

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 400 KB
• Volume: 52
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(83)90137-2

✦ Synopsis

For the first time clear evidence is available that peroxides may constitute the entity which is "out of phase" with cool flames in the periodic sequence of multiple cool flame production according to a thermokinetic interpretation.

The slow combustion of isobutane has been reinvestigated under static conditions where secondary reactions have been minimized and where products of combustion can be estimated at time intervals of 2 or 3 s. It is established that, contrary to previous reports, hydroperoxide reaches a peak concentration before the pressure peak and before the light emission of cool flames, or pies d'~ret. The hydroperoxide concentration decreases markedly before and during cool flames, thus providing evidence that the cool flames may be initiated by the decomposition of the peroxide. Measurement of concentrations of aldehydes and their oxidation products show that they are scarcely involved in the degenerate branching mechanism.