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Author(s):   Raff, J.D.; Stevens, P.S.; Hites, R.A.
Title:   Relative rate and product studies of the OH - Acetone reaction
Journal:   J. Phys. Chem. A
Volume:   109
Page(s):   4728 - 4735
Year:   2005
Reference type:   Journal article
Squib:   2005RAF/STE4728-4735

Reaction:   (CH3)2CO + ·OH → Products
Reaction order:   2
Temperature:   253 - 373 K
Pressure:  0.98 - 1.00 bar
Rate expression:   9.84x10-13 [±1.45x10-13 cm3/molecule s] e-4024 [±366 J/mole]/RT
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:   Direct photolysis
Time resolution:   In both real time and by end product analysis
Analytical technique:   Mass spectrometry
Comments:   OH radicals produced by photolysis of O3 in the presence of water vapor.
Derived using k(OH + 1,1-C2H4F2) = [1.98(+0.48,-0.34)] x 10-18T2 exp[-(460±56)/T] cm3s-1
Acetic acid yield decreases from 0.12 at 273 K to 0.05 at 353 K.

View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
253 1.45E-13
275 1.69E-13
300 1.96E-13
325 2.22E-13
350 2.47E-13
373 2.69E-13