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Title: Kinetics of the gas phase HO2 self-reaction: Effects of temperature, pressure, water and methanol vapours
Journal: Phys. Chem. Chem. Phys.
Volume: 7
Page(s): 2156 - 2163
Year: 2005
Reference type: Journal article
Squib: 2005STO/ROW2156-2163
Reaction:
CH3OH + HO2 + HO2 → CH3OH + H2O2 + O2
Reaction order:
2
Reference reaction:
HO2 + HO2 → H2O2 + O2
Reference reaction order:
2
Temperature:
254 - 309
K
Pressure: 1.01 bar
Rate expression:
no rate data available
Category: Experiment
Data type:
Absolute value measured directly
Pressure dependence:
Rate constant is pressure dependent
Experimental procedure:
Static or low flow - Data taken vs time
Excitation technique:
Flash photolysis (laser or conventional)
Time resolution:
In real time
Analytical technique:
Vis-UV absorption
Comments:
Rate constant corrected for rate enhancement due to methanol vapor.
HO2 generated by the photolysis of Cl2 in the presence of methanol and O2.
The effect of methanol on the rate constant is given by the relative rate expression:
kobs/k = 1 + {(0.56±1.00) x 10-21} x [CH3OH] x exp{(2550±500)/K} cm3s-1
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