Temperature dependence of the yield of products of cool-flame oxidation of propane in the region of negative temperature coefficient

The possibility of a cool-flame oxidation of propane-oxygen mixtures of the composition C3H8:O2 = from 1:3 to 1:1, which is accompanied by the phenomenon of a region of negative temperature reaction rate coefficient (NTC), has been experimentally demonstrated. An increase in the C3H8:O2 ratio (enrichment of the mixture with propane) leads to an expansion of the temperature range for the existence of the cool-flame oxidation regime and shifts the NTC region towards higher temperatures. Cool-flame oxidation of propane is accompanied by the formation of a number of popular petrochemical products (olefins, oxygenates, propylene oxide), the relative yield of which can be controlled by changing the composition of the mixture and the oxidation temperature.