RT Journal Article
ID 3ebaeb2d746a8818
A1 Tomeczek, Jerzy
A1 Gradon, Boguslaw
T1 A NEW ROUTE OF HCN FORMATION VIA N<sub>2</sub>O IN GASEOUS HYDROCARBON FLAMES
JF International Journal of Energy for a Clean Environment
JO IJECE
YR 2004
FD 2004-10-15
VO 5
IS 3
OP 13
AB The formation of HCN in flames via N<sub>2</sub>O reactions with CH<sub><i>i</i></sub> radicals proposed by Gradon (2001) and elaborated later (Tomeczek and Gradon, 2003) into a form of elementary step reactions is tested for rich and lean gaseous premixed CH<sub>4</sub>/air flames. The new route to HCN is thermodynamically more probable than the Fenimore direct reactions of N<sub>2</sub> with CH<sub><i>i</i></sub> radicals. To meet the observed NO formation rates, a set of six reactions is proposed:<br>
<center>
<p>N<sub>2</sub>O + CH<sub>3</sub> &hArr; CH<sub>2</sub>NH + NO,</p>
<p>N<sub>2</sub>O + CH<sub>3</sub> &hArr; CH<sub>3</sub>O + N<sub>2</sub>,</p>
<p>CH<sub>2</sub>NH + H &hArr; H<sub>2</sub>CN + H<sub>2</sub>,</p>
<p>CH<sub>2</sub>NH + O &hArr; H<sub>2</sub>CN + OH,</p>
<p>H<sub>2</sub>CN + H &hArr; HCN + H<sub>2</sub>,</p>
<p>H<sub>2</sub>CN + O &hArr; HCN + OH.</p>
</center>
It has been shown that in rich CH<sub>4</sub>/air flames, the new mechanism of HCN formation via N<sub>2</sub>O contributes to about 25% of NO, in comparison with the 17% contribution of the Fenimore mechanism.
PB Begell House
LK https://www.dl.begellhouse.com/journals/6d18a859536a7b02,0f0a85106c5d34c3,3ebaeb2d746a8818.html