A Shock Tube Study of the Reaction CH3+O2

摘要: The reaction CH3+O2 has been investigated at elevated temperatures in the postshock region behind reflected shocks. thermal decomposition of low concentrations (10–50 ppm) (CH3)2N2 served as CH3 source. Reaction progress was measured by applying narrow-line-width laser absorption OH-radicals λ = 308.6091 nm (Q 1(5)-line). experiments were carried out from 1250 to 1800 K total pressures 2.2 3 bar. For R1: →CH2O+OH and R2: → CH3O+O following rate expressions derived (k cm3 mol-1 sec-1): $${k_1} 3.1 \times {10^{10}}\exp ( - 4402/T)$$ $${k_2} 2.1 {10^{12}}\exp 12242/T).$$