Abstract
Main reaction pathways of n-heptane and isooctane in low-temperature oxidation reactions have been considered to be the similar. In this study, n-heptane and isooctane were oxidized in low temperature oxidation condition using flow reactor and the products were analyzed using a comprehensive two-dimensional gas chromatograph equipped with a time-of-flight mass spectrometer. When n-heptane was used as fuel, reaction products containing two or three oxygen atoms were detected, suggesting that these products are the intermediates produced by low temperature oxidation reactions. In contrast, when isooctane was used as fuel, only several products has been detected. Notably, the several products originated from the oxidation of n-heptane and isooctane in flow reactor experiments are not existed in the detailed chemistry model of low temperature oxidation.
