About kinetic modelling of n-decane autoignition

摘要

n-Decane demonstrates ignition kinetics similar to n-heptane, but faster both in the high-temperature region and in the low-temperature region. At high temperature alkane molecule inhibits the chain branching, thus n-decane has the higher reactivity due to the lower concentration at fixed equivalence ratio. At low temperature peroxy species of higher alkanes, which are important intermediate at the low-temperature oxidation, have the higher thermal stability that increases the reactivity of higher alkanes at low temperatures.rnThe ignition of higher alkanes proceeds through two stages at low-temperature regime, where higher alkanes are converted into lower hydrocarbon derivatives after the first stage. While the length of the second stage can be considerable, it is important for mechanisms of large hydrocarbons to be able also to describe the kinetic of lower hydrocarbons.