Shock Tube Study of Reactions of C Atoms and CH with NO Including Product ChannelMeasurements

摘要

The reactions of C atoms and CH with NO, which are believed to be initial stepsin the NO reburning reaction mechanism, were studied at high temperature behind reflected shock waves. C atoms were formed by pyrolysis or photolysis of dilute mixtures Of C302 in argon or by pyrolysis of dilute mixtures of CH4 in argon. CH was formed from the pyrolysis of dilute mixtures of CH4 or C2H6 (<30 ppm) in argon. C atoms were detected by use of atomic resonance-absorption (ARAS) at 156.1 nm. CH was detected by CW, narrow-line-width laser absorption at 431.131 nm. In the presence of excess NO, C atoms formed by pyrolysis or photolysis