Temperature dependence and deuterium kinetic isotope effects in the HCO(DCO)+O-2 reaction between 296 and 673 K

Authors
DeSain, JD Jusinski, LE Ho, AD Taatjes, CA
Citation
Jd. Desain et al., Temperature dependence and deuterium kinetic isotope effects in the HCO(DCO)+O-2 reaction between 296 and 673 K, CHEM P LETT, 347(1-3), 2001, pp. 79-86
Citations number
30
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
347
Issue
1-3
Year of publication
2001
Pages
79 - 86
Database
ISI
SICI code
0009-2614(20011019)347:1-3<79:TDADKI>2.0.ZU;2-B
Abstract
The reactions HCO (DCO) + O-2 have been measured by the laser photolysis/CW laser-induced fluorescence (LIF) method from 296 to 673 K, probing the (B- 2 A ' - X-2 A ') HCO (DCO) system. The HCO (DCO) + O-2 rate coefficients ar e 5.63 +/- 0.31 and 5.61 +/- 0.23 x 10(-12) cm(3) molecule(-1) s(-1), respe ctively, at 296 K; both are nearly independent of temperature between 296 a nd 673 K. The observed deuterium kinetic isotope effect is within the error estimate of previous measurements but is significantly smaller than recent theoretical predictions. (C) 2001 Published by Elsevier Science B.V.