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Author(s):   Wollenhaupt, M.; Carl, S.A.; Horowitz, A.; Crowley, J.N.
Title:   Rate Coefficients for Reaction of OH with Acetone Between 202 and 395 K
Journal:   J. Phys. Chem. A
Volume:   104
Page(s):   2695 - 2705
Year:   2000
Reference type:   Journal article
Squib:   2000WOL/CAR2695-2705

Reaction:   (CH3)2CO + ·OH → Products
Reaction order:   2
Temperature:   202 - 395 K
Pressure:  2.67E-2 - 0.13 bar
Rate expression:   2.01x10-16 [cm3/molecule s] (T/298 K)8.63 e16745 [J/mole]/RT
Bath gas:   Ar
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:   Resonance fluorescence
Comments:   The parameters presented are an empirical fit by the abstractor and are only valid over the temperature range given. The temperature dependence obtained between 202 K and 395 K exhibits non-Arrhnius behavior and was presented by the authors as:
k(202-395 K)= (8.8?.6)10-12exp{-(1320?63)/T} + (1.7?.9)10-14exp{+(423?09)/T}
where errors are two statistical standard deviations. OH was generated by pulsed laser photolysis of NO2 at 439 nm with the subsequent reaction of O(1D) and H2. Resonance Fluorescence was used for the OH detection.

OH was generated by pulsed laser photolysis of HONO at 351 nm. LIF was used for the OH detection.


View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
202 1.50E-13
225 1.37E-13
250 1.39E-13
275 1.53E-13
300 1.76E-13
325 2.09E-13
350 2.55E-13
375 3.15E-13
395 3.76E-13