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Author(s):   Farkas, E.; Szilagyi, I.; Dobe, S.; Berces, T.; Marta, F.
Title:   Kinetic isotope effect in the reaction of OH radical with acetone-d6
Journal:   React. Kinet. Catal. Lett.
Volume:   80
Page(s):   351 - 358
Year:   2003
Reference type:   Journal article
Squib:   2003FAR/SZI351-358

Reaction:   (CH3)2CO + H2 + CH3C(O)CH2(·)
Reaction order:   2
Reference reaction:   (CD3)2CO + → ·CD2C(O)CD3 + HD
Reference reaction order:   2
Temperature:   298 K
Pressure:  2.66E-3 bar
Rate expression:   5.33±4.1x10-1
Bath gas:   He
Category:  Experiment
Data type:   Relative value normalized by a reference value
Pressure dependence:   Rate constant is pressure independent
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Discharge
Time resolution:   In real time
Analytical technique:   Resonance fluorescence
Comments:   Rate of reaction of OH with deuterated acetone was measured. OH produced from NO2 + H reaction with H produced from a low pressure discharge. OH detected using resonance fluorescence. Temperature 298(1) K, Total pressure 2.66 mbar He, acetone typically 1-15 E10-10 cm-3. OH concentration typ 8 E-13 cm-3. From previous measurements Vasvari et al PCCP 3, 551 (2001) compute kH/kD of 5.3(0.4). This value is slightly lower than 5.9(0.9) of Smith and Ravishankar (2002) and the 6.0 of Wallington et al (1988). Based on all data they recommended an intermediate value of 5.7.

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