Kinetics Database Logo

Kinetics Database Resources

Simple Reaction Search

Search Reaction Database

Search Bibliographic Database

Set Unit Preferences


Rate Our Products and Services


Other Databases

NIST Standard Reference Data Program

NIST Chemistry Web Book

NDRL-NIST Solution Kinetics Database

NIST Computational Chemistry Comparison and Benchmark Database

The NIST Reference on Constants, Units, and Uncertainty


Administrative Links

NIST home page

MML home page

Chemical and Biochemical Reference Data Division

MML home page

Chemical and Biochemical Reference Data Division

  NIST Logo Home
©NIST, 2013
Accessibility information
Author(s):   Nizkorodov, S.A.; Harper, W.W.; Blackmon, B.W.; Nesbitt, D.J.
Title:   Temperature Dependent Kinetics of the OH/HO2/O3 Chain Reaction by Time-Resolved IR Laser Absorption Spectroscopy
Journal:   J. Phys. Chem. A
Volume:   104
Page(s):   3964 - 3973
Year:   2000
Reference type:   Journal article
Squib:   2000NIZ/HAR3964-3973

Reaction:   ·OH + O3HO2 + O2
Reaction order:   2
Temperature:   191 - 314 K
Pressure:  2.67E-2 - 4.00E-2 bar
Rate expression:   2.26x10-12 [±4.0x10-13 cm3/molecule s] e-8115 [±416 J/mole]/RT
Category:  Experiment
Data type:   Absolute value measured directly
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Flash photolysis (laser or conventional)
Time resolution:   In real time
Analytical technique:   IR absorption
Comments:   Measured rate contains small contribution from HO_2 + O_3 -> OH + O_2Bath gas Ar for T > 245 K; CO_2/H_2 for lower T.

View full bibliographic record.

Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
191 1.36E-14
200 1.72E-14
225 2.95E-14
250 4.56E-14
275 6.50E-14
300 8.73E-14
314 1.01E-13