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Title: Reaction of hydroxyl radical with acetone. 1. Kinetics of the reactions of OH, OD, and (OH)-O18 with acetone and acetone-d6
Journal: J. Phys. Chem. A
Volume: 107
Page(s): 5014 - 5020
Year: 2003
Reference type: Journal article
Squib: 2003GIE/GIL5014-5020
Reaction:
(CH3)2CO + ·OH → Products
Reaction order:
2
Temperature:
199 - 383
K
Pressure: 1.33E-3 - 0.65 bar
Rate expression:
no rate data available
Bath gas:
N2
Category: Experiment
Data type:
Absolute value measured directly
Pressure dependence:
Rate constant is pressure independent
Experimental procedure:
Static or low flow - Data taken vs time
Excitation technique:
Flash photolysis (laser or conventional)
Time resolution:
In real time
Analytical technique:
Laser induced fluorescence
Comments:
The rate coefficient for the reaction of OH with acetone, k1, was measured by producing OH via pulsed laser photolysis and detecting it via laser-induced fluorescence to be
k1(T) = 1.38*10-13 + 3.86*10-11*exp(-1997/T) cm3/( molecule s).
The rate constant at T = 298 k is determined as:
k1(298) = (1.77 ?0.16)*10-13, cm3/( molecule s)
The quoted uncertainty is 9% at the 95% confidence level and includes the estimated systematic error.
He, N2, SF6 were used as bath gases with the total pressure range between 25 Torr to 490 Torr.
The discharge flow measurements were also done at the pressure between 1.1 Torr and 3 Torr; at temperatures 238 K, 296 K, 333 K, and 353 K.
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