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Author(s):   Yujing, M.; Mellouki, A.
Title:   Temperature Dependence for the Rate Constants of the Reaction of OH Radicals with Selected Alcohols
Journal:   Chem. Phys. Lett.
Volume:   333
Page(s):   63 - 68
Year:   2001
Reference type:   Journal article
Squib:   2001YUJ/MEL63-68

Reaction:   iso-C3H7OH + ·OH → Products
Reaction order:   2
Temperature:   253 - 372 K
Pressure:  4.00E-2 - 0.40 bar
Rate expression:   2.8x10-12 [±3.9x10-13 cm3/molecule s] e1530 [±333 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:   Laser induced fluorescence
Comments:   OH was generated by photolysis of H2O2 at 248 nm.

The reaction mechanism is abstraction of H with the primary channel estimated by the authors using a Structure Reactivity Relationship (SAR):
OH + CH3CH(OH)CH3 -> H2O + CH3C(OH)CH3 (93%)

Uncertainties are 2 standard deviations from the least squares analysis plus an estimated systematic uncertaintiy of 5%.

View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
253 5.79E-12
275 5.47E-12
300 5.17E-12
325 4.93E-12
350 4.74E-12
372 4.59E-12