The kinetics of autoignition of rich N_2O-H_2-O_2-Ar mixtures at high temperatures

摘要

The kinetics of chemical transformation in N_2O-H_2-O_2-Ar mixtures has been studied in the temperature range from 1000 to 2700 K and at pressures from 0.1 to 10 atm. A shock-tube experiment has been used to obtain data on the times of ignition delay in mixtures weakly diluted with inert gas (50 to 90% Ar). Based on the results, a mechanism to describe the kinetics in the system under study has been suggested. The values of rate constants of some chemical reactions involving N_2O, NO, and OH have been specified.