Kinetic Study of Fuel NO Formation Using Pyridine as a Model Compound of Fuel Nitrogen

Abstract

To investigate the mechanism of fuel NO formation, an experimental study using a flow reactor and a numerical simulation with a detailed kinetic model were performed. Pyridine was used as a model compound of fuel nitrogen, and the effects of oxygen and H₂O concentrations on reaction mechanism was investigated. The results showed that oxygen concentration had little effect on the reaction mechanism, while NO formation was inhibited with an increase in H₂O concentration. In this reaction mechanism, NO is mainly formed by the NCO+O reaction, which is an important reaction for NO formation. At high H₂O concentration, many 0 radicals are consumed by the O+H₂O reaction. Therefore, the formation of NO is reduced with an increase in H₂O concentration.