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Author(s):   Lu, C.W.; Chou, S.L.; Lee, Y.P.; Xu, S.C.; Xu, Z.F.; Lin, M.C.
Title:   Experimental and theoretical studies of rate coefficients for the reaction O(3P)+CH3OH at high temperatures
Journal:   J. Chem. Phys.
Volume:   122
Page(s):  
Year:   2005
Reference type:   Journal article
Squib:   2005LU/CHO244314

Reaction:   CH3OH + → Products
Reaction order:   2
Temperature:   835 - 1777 K
Pressure:  1.45 - 2.60 bar
Rate expression:   2.29x10-10 [±1.8x10-11 cm3/molecule s] e-35004 [±831 J/mole]/RT
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:   Temperature produced by shock heating; O-atoms generated by 248 or 193-nm photolysis of SO2.
Combining present results with those of 1981KEI/TAN2693 obtained at 298-998 K gives:

k = (2.74±0.07) x 10-18T2.25±0.13exp[-(1500±90)/T] cm3s-1

Computational studies also carried out indicating that the channels forming OH + CH2OH dominate at 300 K, while those forming OH + CH3O dominate above 1700 K.

View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
835 1.48E-12
850 1.62E-12
900 2.13E-12
950 2.72E-12
1000 3.40E-12
1050 4.15E-12
1100 4.99E-12
1150 5.89E-12
1200 6.86E-12
1250 7.89E-12
1300 8.98E-12
1350 1.01E-11
1400 1.13E-11
1450 1.26E-11
1500 1.38E-11
1550 1.51E-11
1600 1.65E-11
1650 1.79E-11
1700 1.92E-11
1750 2.07E-11
1777 2.14E-11