Experimental and kinetic study on low temperature oxidation and pyrolysis of iso-octane and gasoline

A comprehensive experimental and kinetic study on the low temperature oxidation and pyrolysis of iso-octane and CNPC 92# was conducted. Species profiles measurements were performed in a jet-stirred reactor (JSR) at the temperature range of 500-1300 K under atmospheric pressure, with a fixed residence time of 2.0 s and for the equivalence ratios ranging from 0.5 to infinity (pyrolysis). Three kinetic models were adopted to simulate mole fraction profiles of major species in the oxidation and pyrolysis of iso-octane, and sensitivity analysis was also conducted using the model which preformed best. In addition, a detailed gasoline surrogate kinetic model was developed including five representative fuels in gasoline. This kinetic model and a TRF model containing three individual fuels from KAUST were verified by low temperature oxidation and pyrolysis experiment data of CNPC 92#. The results show that prediction profiles by the five-component model and measured mole fraction of major intermediates are in a better agreement than TRF model.

Automated summary

A comprehensive experimental and kinetic study was conducted on the low temperature oxidation and pyrolysis of iso-octane and CNPC 92#. The results showed that the five-component model predicted the major intermediates more accurately than the TRF model.