Absolute rate constant for the reaction OH (v=0)+O3→HO2 +O2 over the temperature range 238–357 °K

The technique of laser flash photolysis–resonance fluorescence has been employed to measure absolute rate constants for the reaction OH (v=0)+O3→HO2+O2 over the temperature range 238–357 K. The results are described by the Arrhenius expression k =1.82+0.35−0.29×10−12 exp[(−930±50)/T] cc/molecule s. Extrapolation of this expression to 225 K, the temperature of the stratosphere in the region where O3 levels are highest, gives a rate constant which is ∼65% higher than the currently recommended value.

[1]  R. A. Perry,et al.  Kinetics of the reactions of OH radicals with C2H2 and CO , 1977 .

[2]  R. Overend,et al.  The question of a pressure effect in the reaction OH + CO at room temperature☆ , 1977 .

[3]  Ian W. M. Smith.  The mechanism of the OH + CO reaction and the stability of the HOCO radical , 1977 .

[4]  Harold S. Johnston,et al.  Reactions and quenching of vibrationally excited hydroxyl radicals , 1976 .

[5]  R. Atkinson,et al.  Rate constants for the reaction of the OH radical with H2 and NO (M=Ar and N2) , 1975 .

[6]  D. Davis,et al.  Flash photolysis‐resonance fluorescence kinetics study: Temperature dependence of the reactions OH + CO → CO2 + H and OH + CH4 → H2O + CH3 , 1974 .

[7]  M. Kurylo.  Kinetics of the reactions OH (v = O) + NH3 →; H2O + NH2 and OH(v = O) + O3 → HO2 + O2 AT 298°K , 1973 .

[8]  D. Davis,et al.  Direct rate measurements showing negative temperature dependence for reaction of atomic oxygen with cis‐2‐butene and tetramethylethylene , 1973 .

[9]  James G. Anderson,et al.  Kinetics of the reaction OH (v = 0) + O3 → HO2 + O2 , 1973 .

[10]  James G. Anderson,et al.  Kinetics of the reaction OH + NO2 + M → HNO3 + M , 1972 .

[11]  D. Davis,et al.  A flash photolysis–resonance fluorescence kinetics study of ground‐state sulfur atoms. II. Rate parameters for reaction of S(3P) with C2H4 , 1972 .

[12]  M. Kurylo,et al.  Absolute Rate Constants for the Reaction of Atomic Oxygen with Ethylene over the Temperature Range 232–500°K , 1972 .

[13]  A. Potter,et al.  Reaction rate of vibrationally excited hydroxyl with ozone. , 1971, Applied optics.

[14]  A. Potter,et al.  Mean Radiative Lifetime of Vibrationally Excited (υ = 9) Hydroxyl. Rate of the Reaction of Vibrationally Excited Hydroxyl (υ = 9) with Ozone , 1971 .

[15]  W. Demore.  Reaction of O(1D) with H2 and the Reactions of H and OH with Ozone , 1967 .

[16]  W. Demore.  New Mechanism for OH‐Catalyzed Chain Decomposition of Ozone , 1967 .