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Home ©NIST, 2013 Accessibility information |
Title: Regularities in Arrhenius parameters for rate constants of abstraction reactions of hydroxyl radical with C-H bonds
Journal: J. Photochem. Photobiol. A Chem.
Volume: 176
Page(s): 129 - 135
Year: 2005
Reference type: Journal article
Squib: 2005DEM129-135
Reaction:
CH3CN + ·OH → Products
Reaction order:
2
Reference reaction:
CH4 + ·OH → ·CH3 + H2O
Temperature:
306 - 393
K
Rate expression:
1.85x10-12 [±3.3x10-13 cm3/molecule s] e-11449 [±515 J/mole]/RT
Category: Experiment
Data type:
Relative value normalized by a reference value
Pressure dependence:
None reported
Experimental procedure:
Static or low flow - Data taken vs time
Excitation technique:
Direct photolysis
Time resolution:
In real time
Analytical technique:
Fourier transform (FTIR)
Comments:
No details of the experimental setup and conditions are given. The reader is referred to an earlier publication for relevant information. Rate constant units are erroneously reported as cm3 mol-1 s-1 in the data table (Table 5). The correct units are cm3 molecule-1 s-1. Error limits are standard deviations of the fit.
A predictive correlation is derived between the values of room-temperature rate constants of H abstraction by OH and the corresponding activation energies and preexponential factors.
View full bibliographic record.
Rate constant values calculated from the Arrhenius expression:
| T (K) | k(T) [cm3/molecule s] |
|---|---|
| 306 | 2.06E-14 |
| 325 | 2.67E-14 |
| 350 | 3.62E-14 |
| 375 | 4.70E-14 |
| 393 | 5.57E-14 |