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FT-IR product study of the gas-phase Br-initiated oxidation of trans-2-butene under atmospheric conditions between 246 and 298 K Cover

FT-IR product study of the gas-phase Br-initiated oxidation of trans-2-butene under atmospheric conditions between 246 and 298 K

Open Access
|Jan 1997

Abstract

The products of the Br-atom initiated oxidation of trans-2-butene have been studied in a largevolume reaction chamber between 246 and 298 K using in situ FT-IR for the analysis. 3-Bromobutan-2-one, acetaldehyde and acetylbromide were the major products of this oxidation process. Additional products included formaldehyde and hydrogen bromide and evidence was found for the formation of 3-bromobutan-2-hydroperoxide. Decreasing the temperature from 298 K down to 246 K resulted in an increase in the yield of 3-bromobutan-2-one and a decrease in the yields of acetaldehyde, acetylbromide, formaldehyde and hydrogen bromide. Addition of NO to the reaction system resulted in nearly a doubling of the yields of 3-bromobutan-2-one, acetaldehyde and formaldehyde. The reaction mechanism is discussed and possible consequences of the results for the involvement of bromine/alkene chemistry in the springtime depletion of ozone in the Arctic are considered.

Language: English
Page range: 566 - 582
Submitted on: Nov 27, 1996
Accepted on: Jul 15, 1997
Published on: Jan 1, 1997
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services

© 1997 A. Bierbach, I. Barnes, And K. H. Becker, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.