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Title: Kinetic study of the reaction of acetaldehyde with OH
Journal: J. Phys. Chem. A
Volume: 107
Page(s): 10834 - 10844
Year: 2003
Reference type: Journal article
Squib: 2003WAN/CHE10834-10844
Reaction:
CH3CHO + ·OH → Products
Reaction order:
2
Pressure: 1.33E-2 - 2.67E-2 bar
Rate expression:
1.67x10-11 [cm3/molecule s]
Bath gas:
He
Category: Experiment
Data type:
Absolute value measured directly
Experimental procedure:
Static or low flow - Data taken vs time
Excitation technique:
Flash photolysis (laser or conventional)
Time resolution:
In real time
Analytical technique:
IR absorption
Comments:
Room temperature experiments.
ABSTRACT:
The reaction of OH with acetaldehyde in the gas phase has been studied by tunable infrared laser kinetic spectroscopy. As expected, the main channel is the production of water (ca. 100%). An upper bound of 5% was placed on the yield of CH3, and the yield of H is estimated as 5 %. A rate constant of 1.67*10-11 cm3molecules-1s-1 is obtained for the title reaction, in good agreement with previous measurements. The major product of the reaction, CH3CO, reacts with O3, producing CH3, CO2, and O2 in one channel with a rate constant of 1.4*10-11 cm3molecules-1s-1 and producing CH3CO2 and O2 in the other channel with a rate constant of 3.3*10-11 cm3molecules-1s-1.
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