Small Organic Peroxy Radicals – Table 1

Table 1. Recommended Rate Coefficients for Peroxy Radical Reactions (units of cm3molecule-1s-1)

Reaction Number k(298 K) A Ea/R (K) Uncert

at 298K

CH3O2 + HO2 1 5.2 e-12 4.1 e-13 -750±150 1.3
CH3O2 + CH3O2 2 3.5 e-13 9.5 e-14 -390±100 1.2
CH3O2 + NO 3 7.7 e-12 2.8 e-12 -300±100 1.15
CH3O2 + NO2 4 (k0) 1.3 e-30 n = 4.0±2.0 1.4
4 (k ) 7.6 e-12 m = 2.0±2.0 1.2
CH3O2 + O3 5 1.0 e-17 3.0 e-16 1000±500 3.0
C2H5O2 + HO2 6 7.8 e-12 7.4 e-13 -700±200 1.3
C2H5O2 + NO 7 8.9 e-12 2.7 e-12 -350±50 1.1
C2H5O2 + NO2 8 (k0) 4.9 e-30 n = 5.8±2.0 1.5
8 (k ) 7.6 e-12 m = 0.9±0.9 1.5
CH3C(O)O2 + HO2 9 1.4 e-11 4.3 e-13 -1040±500 2.0
CH3C(O)O2 + CH3O2 10 1.1 e-11 2.0 e-12 -500±250 1.5
CH3C(O)O2 + CH3C(O)O2 11 1.4 e-11 2.5 e-12 -500±200 1.4
CH3C(O)O2 + NO 12 2.0 e-11 8.1 e-12 -270±100 1.15
CH3C(O)O2 + NO2 13 (k0) 8.5 e-29 n = 6.5±2.0 1.2
13 (k ) 1.1 e-11 m = 1.0±1.0 1.2
CH3C(O)CH2O2 + HO2 14 9.0 e-12 8.6 e-13 -700±300 2.0
CH3C(O)CH2O2 + CH3O2 15 4.0 e-12 7.5 e-13 -500±300 2.0
CH3C(O)CH2O2 + NO 16 8.0 e-12 2.8 e-12 -300±200 1.5
CH3C(O)CH2O2 + NO2 17 6.4 e-12

(1atm)

2.3 e-12 -300±300 1.5

For bimolecular reactions, the temperature dependent expression is given by k(T) = Aexp[-(E/R)/T].

For pressure dependent reactions (4,8,13) the temperature dependent expressions are k0(T) = A(T/298)-n and k (T) = A(T/298)-m.