IDENTIFICATION OF PEROXIDES IN COMBUSTION.
Final rept., 1 Mar 56-30 Nov 59,
IMPERIAL COLL OF SCIENCE AND TECHNOLOGY LONDON (ENGLAND)
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Research was conducted to determine whether the peroxidic compounds observed in oxidation of hydrocarbons are organic hydroperoxides or addition compounds of H2O2 with aldehydes. The slow combustion of n-heptane and iso-octane was studied in a flow system under different conditions of temperature and with varying contact time. With n-heptane, formation of an initial hydroperoxide is believed to occur at low temperatures C7H16 O2 yields C7H15 HO2 yields C7H15OOH. At higher temperatures probability of separation of the radicals before rearrangement is greater, and the radicals may be expected to undergo individual reactions. Iso-octane is less readily attacked by O2 than n-heptane, although the CH2 and CH groups are reached, even though with difficulty, by O2. Separation of a number of peroxides by gas chromatography was achieved. Slow combustion of isopentene with mixtures of composition C5H12 302 produced amounts of peroxide varying periodically with increasing temperature, maximum yields being obtained at 360 and 440C.
- Organic Chemistry