Title: The reaction of acetaldehyde and propionaldehyde with hydroxyl radicals: experimental determination of the primary H2O yield at room temperature
Authors: Vandenberk, Sabine
Peeters, Jozef # ×
Issue Date: Jan-2003
Publisher: Elsevier science sa
Series Title: Journal of photochemistry and photobiology a-chemistry vol:157 issue:2-3 pages:269-274
Abstract: The branching fraction of H-abstraction in the elementary reactions of acetaldehyde and propionaldehyde with OH at 290 K was determined directly using a fast-flow reactor coupled to a molecular beam sampling mass spectrometry apparatus. The primary-product H2O yield of the title reactions was quantified relative to that of the isobutane + OH reaction, and found to be 89+/-6 and 100+/-10% for the reactions of acetaldehyde + OH and propionaldehyde + OH, respectively. Furthermore, an upper limit of 3% could be determined for the yield of formic acid in the hypothetical addition/elimination reaction pathway. We conclude that the reaction of OH radicals with aldehydes proceeds predominantly, if not exclusively, via H-abstraction, forming H2O and R-CO. (C) 2003 Elsevier Science B.V. All rights reserved.
ISSN: 1010-6030
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Quantum Chemistry and Physical Chemistry Section
× corresponding author
# (joint) last author

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