Chemical Kinetic Study of Nitrogen Oxides Formation Trends in Biodiesel Combustion

Table 1

Elementary steps in the thermal mechanism of NO and N₂O. The forward reaction rate is given by 𝑘_𝑓=𝐴_𝑓𝑇^𝑛𝑓exp(−𝐸_𝑓/𝑅𝑇) [12].

		𝐴𝑓	𝑛𝑓	𝐸𝑓
1	N + NO = N2 + O	3.50𝐸+13	0.0	330
2	N + O2 = NO + O	2.65𝐸+12	0.0	6400
3	N + OH = NO + H	7.33E + 13	0.0	1120
4	N + CO2 = NO + CO	1.90𝐸+11	0.0	3400
5	N2O + O = N2 + O2	1.40𝐸+12	0.0	10810
6	N2O + O = NO + NO	2.90𝐸+13	0.0	23150
7	N2O + H = N2 + OH	4.40𝐸+14	0.0	18880
8	N2O + OH = N2 + HO2	2.00𝐸+12	0.0	21060
9	N2O + M = N2 + O+M	1.30𝐸+11	0.0	59820
10	NO +HO2 = NO2 + OH	2.11𝐸+12	0.0	−480
11	NO2 +O = NO + O2	3.90𝐸+12	0.0	−240
12	NO2 + H = NO + OH	1.32𝐸+14	0.0	360
13	NO + O + M = NO2 + M	1.06𝐸+20	−1.41	0.0
14	NO2 + CH3 = CH3O + NO	1.50𝐸+13	0.0	0.0
15	NO + CH3O2 = NO2 + CH3O	2.53𝐸+12	0.0	−358