Product study of the C2H5O2+HO2 reaction in 760 Torr of air at 284-312 K

The title reaction was studied in 1 atmosphere pressure of synthetic air at 284, 298, and 312 K. FTIR spectroscopy was used to identify two products; ethyl hydroperoxide and acetaldehyde. Acetaldehyde was a minor product form ed in a yield consistent with that expected from unwanted secondary reactio ns. In 1 atmosphere pressure of air at 284-312 K the title reaction produce s ethyl hydroperoxide in a yield of (104 +/- 5)% and acetaldehyde in a yiel d of (2 +/- 4)%. We recommend that in atmospheric models the reaction of C2 H5O2 with HO2 radicals be represented by a single-reaction pathway giving C 2H5OOH. (C) 2000 Published by Elsevier Science B.V. All rights reserved.