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Author(s):   Golden, D.M.; Smith, G.P.; McEwen, A.B.; Yu, C.-L.; Eiteneer, B.; Frenklach, M.; Yaghjiani, G.L.; Ravishankara, A.R.; Tully, F.P.
Title:   OH(OD) + CO: measurements and an optimized RRKM fit
Journal:   J. Phys. Chem. A
Volume:   102
Page(s):   8598 - 8606
Year:   1998
Reference type:   Journal article
Squib:   1998GOL/SMI8598-8606

Reaction:   COOHCO2 +
Reaction order:   1
Temperature:   253 - 2600 K
Rate expression:   1.25x102 [s-1] (T/298 K)0.41 e-147856 [J/mole]/RT
Category:  Experiment
Data type:   Experimental value and limited review
Pressure dependence:   Rate constant is high pressure limit
Comments:   Measurements were made for the rate constant of OH + CO + He at 293 K, and OD + CO + M (M) He, Ar, N2, air, SF6) at 253-343 K. Results were also obtained for OH + CO in a shock tube at 1400-2600 K using OH and CO absorption. A two-channel RRKM model of these and other representative results was constructed, with five adjustable parameters. A systematic optimization method was then employed to produce the best fit of the data and provide predictive k(T,P,D/H) expressions for other conditions.

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Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [s-1]
253 3.49E-29
300 2.27E-24
400 6.97E-18
500 5.55E-14
600 2.25E-11
700 1.65E-9
800 4.18E-8
900 5.19E-7
1000 3.91E-6
1100 2.05E-5
1200 8.16E-5
1300 2.64E-4
1400 7.23E-4
1500 1.73E-3
1600 3.74E-3
1700 7.37E-3
1800 1.35E-2
1900 2.32E-2
2000 3.78E-2
2100 5.90E-2
2200 8.83E-2
2300 1.28E-1
2400 1.80E-1
2500 2.46E-1
2600 3.28E-1