ISSN:
0538-8066
Keywords:
Chemistry
;
Physical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The rate constant for the HO2 self reaction has been determined as a function of methanol vapor concentration at 278 K and 299 K. A molecular modulation technique was used in which HO2 radicals were photochemically produced in flowing gas mixtures comprised of Cl2, CH3OH, N2 and O2 with HO2 monitored in the UV at 220 nm. A positive linear dependence of the second order rate constant on methanol concentration was found and this effect increased with decreasing temperature. The rate constant for the HO2 self reaction can be described by \documentclass{article}\pagestyle{empty}\begin{document}$$k = 9.2 \cdot 10^{- 15} {\rm \,exp(1700/}T)\,+ \,2.1 \cdot 10^{- 34} {\rm \,exp(3000/}T)[{\rm CH}_{\rm 3} {\rm OH]cm}^{\rm 3}\, {\rm \,molecule}^{{\rm - 1}} {\rm \,s}^{{\rm - 1}}$$\end{document} in nitrogen at atmospheric pressure and in the methanol concentration range 1 · 1016 to 3 · 1017 molecules cm-3.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/kin.550200403
