Chemical Kinetic Study of Nitrogen Oxides Formation Trends in Biodiesel Combustion

Table 2

Elementary steps in the NCN pathway of prompt NO formation. The forward reaction rate is given by 𝑘_𝑓=𝐴_𝑓𝑇^𝑛𝑓exp(−𝐸_𝑓/𝑅𝑇) [13].

		𝐴𝑓	𝑛𝑓	𝐸𝑓
1	CH + N2 = NCN + H	3.0𝐸+12	0.0	22155
2	CN + N2O = NCN + NO	6.0𝐸+13	0.0	15360
3	CN + N2O = NCN + NO	1.80𝐸+10	0.0	1450
4	CN + NCO = NCN + CO	1.8𝐸+13	0.0	0.0
5	C2O + N2 = NCN + CO	7.0𝐸+11	0.0	17000
6	CH + N2 = HNCN	1.65𝐸+21	−3.62	14196
7	HNCN + M = H + NCN + M	1.79𝐸+28	−3.44	64502
8	HNCN + O = NO + HCN	1.22𝐸+14	0.05	73.5
9	HNCN + O = NH + NCO	5.6𝐸+13	0.05	73.5
10	HNCN +O = CN + HNO	9.36𝐸+12	0.05	73.5
11	HNCN + OH = NCN + H2O	8.28𝐸+03	2.78	3135
12	HNCN + O2 = HO2 + NCN	1.26𝐸+08	1.28	24240
13	NCN = N + CN	2.95𝐸+30	−5.29	117090
14	NCN = C + N2	2.66𝐸+28	−5.23	83110
15	NCN = CNN	3.69𝐸+29	−5.84	78410
16	NCN + H = HCN + N	1.89𝐸+14	0.0	8425
17	NCN + O = CN + NO	2.54𝐸+13	0.15	−34
18	NCN + O = CO + N2	2.42𝐸+02	2.32	−1135
19	NCN + O = N + NCO	2.2𝐸+09	0.42	−157
20	NCN + N = N2 + CN	1.0𝐸+13	0.0	0.0
21	NCN + C = CN + CN	1.0𝐸+13	0.0	0.0
22	NCN + OH = HCN + NO	3.32𝐸+10	−0.97	7290
23	NCN + OH = HCN + NO	4.69𝐸+10	0.44	4000
24	NCN + O2 = NO + NCO	3.8𝐸+09	0.51	24590
25	NCN + CH = HCNCN	3.21𝐸+13	0.0	−860
26	NCN + CN = C2N2 + N	1.25𝐸+14	0.0	8020
27	NCN + CH2 = H2CN + CN	7.99𝐸+13	0.0	4630