Shock Tube and Modeling Study of Methylamine Thermal Decomposition

Article abstract of DOI:10.1021/j100291a044

The thermal decomposition of CH3NH2 was studied by IR laser kinetic absorption spectroscopy behind reflected shock waves with 1400 < T₅ < 1820 K and 4.0E-6 < ρ₅ < 8.0E-6 mol cm^-3.The absorption profiles were satisfactorily modeled with a 28-reaction mechanism based on earlier investigations.The initial decomposition was found to be dominated by CH3NH2 + M -> CH3 + NH2 + M (ΔH^o₀ = 350 kJ) under these conditions, for which the rate constant expression k_a = 5E17 exp(-260kJ/RT) cm³ mol^-1 s^-1 was derived.