FTIR spectroscopic study of the gas-phase reaction of HO"2 with H"2CO - Barnes, I.; Becker, K.H.; Fink, E.H.; Reimer, A.; Zabel, F.; Niki, H. (Elsevier)
The reaction of formaldehyde with HO"2 radicals in the presence of O"2 and NO"2 has been studied in a 420 reaction chamber at 0^o C in 533 mbar of synthetic air. Reactants and products were measured by FTIR absorption spectrometry-Additional evidence is presented for the formation of the HOCH"2OO radical as the primary reaction product, by the IR spectroscopic identification of its NO"2 recombination product HOCH"2OONO"2. By computer simulation of the concentration-time profiles of HO"2NO"2, H"2CO and HOCH"2OONO"2, the rate constants (0^oC, 533 mbar, M = air) k"1 = (1.1 +/- 0.4) x 10^-^1^3 cm^3 s^-^1 and k"-"1 = 20"-"1"0^+^2^0 s^-^i have been derived for the reactions (1, -1) HO"2 + H"2CO HOCH"2OO.
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Keywords: V; U