Role of acetaldehyde in propane combustion
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 75, 2798-2806
- https://doi.org/10.1039/f19797502798
Abstract
The combustion of propane was studied in a static system at 568 K using the unusual 9:1 ratio of fuel:oxygen mixtures. The high propane pressures effectively inhibited combustion of products so that constant ratios of some of the products were obtained over a very long period. This is turn enabled a number of rate constant ratios to be determined and mechanisms to be justified by comparison with known ratios for similar reactions (at other temperatures). It was shown that the autocatalytic reactions by which acetaldehyde accelerated the combustion of propane were likely to be sC3H7O2+ CH3CHO → sC3H7OOH + CH3CO and sC3H7O2H → CH3CHO + CH3+ OH which were superseded at higher temperatures where cool flames cease to occur, by [graphic omitted] and by sC3H7+ O2→ C3H6+ HO2 which was the major reaction even at 568 K.Keywords
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