S. Bauerle et al., INVESTIGATION OF THE REACTION OF (CH2)-C-3 WITH NO AT HIGH-TEMPERATURES, Berichte der Bunsengesellschaft fur Physikalische Chemie, 99(2), 1995, pp. 97-104
Citations number
26
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
The reaction (CH2)-C-3 + NO was studied behind incident shock waves ov
er the temperature range 1100-2600 K by following the H and O atom for
mation with Atomic Resonance Absorption Spectroscopy (ARAS) and the OH
radical formation with Laser Absorption. In the temperature range fro
m 1100 to 2500 K the rate constant of the H atom formation formally at
tributed to a reaction channel giving HCNO + H (1h) obtained on the ba
sis of the experiments reported here is k(1h) = 10((12.4+/-0.2)). exp
(-(25 +/-2) kJ mol(-1)/RT) cm(3) mol(-1) s-1. The rate constant of the
channel leading to HCN+OH (1d) was determined to be k(1d) = 10(11.7+/
-0.3). exp (-(12+/-2) kJ mol(-1)/RT) cm(3) mol(-1) s(-1). The evaluati
on of the experimental profiles by means of computer simulation leads
to an overall rate constant of about k(1) = (1+/-0.5). 10(12) cm(3) mo
l(-1) s(-1) without any noticeable temperature dependence within the e
rror limits in the temperature range from 1200 to 2600 K. The contribu
tion of a reaction channel leading directly or indirectly to O (or N)
atoms was found to be less than 15% of the overall reaction at tempera
tures below 2000 K.