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FTIR spectroscopic study of the gas-phase reaction of HO2 with H2CO

โœ Scribed by I. Barnes; K.H. Becker; E.H. Fink; A. Reimer; F. Zabel; H. Niki

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
838 KB
Volume
115
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The reaction of formaldehyde with HO2 radicaJ.s in the presence of 02 and NO2 has been studied in a 420 Q reaction chamber at WC in 533 mba.r of synthetic air. Reactants and products were measured by FflR absorption spectrometry-Additional evidence is presented for the formation of the HOCHzOO radical as the primary reaction product, by the IR spectroscopic lden~~~n of its NO2 recombination product HOCH~OONO~. By computer simu&ion of the conceentra-Con-time profiles of HOzN02, HzCO and HOCH200N02, the rate constants (WC, 533 mbar. M = air) k, = (1.1 f 0.4) X lo-" cm3 s-' andk -1 = 2028 s-l have been derived for the reactions (1, -1) HO2 + H+ZO * HOCH200.

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