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Absolute rate measurements for the reaction of the OH radical with diacetylene over the temperature range of 296–688K

✍ Scribed by Robert A. Perry

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
427 KB
Volume
58
Category
Article
ISSN
0010-2180

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✦ Synopsis

Absolute rate constants have been measured for the reaction of the OH radical with diacetylene over the temperature range of 296-688K using a flash photolysis-resonance fluorescence technique. The best fit to the data is given by the following Arrhenius expression: k= 1.11 x 10 -II exp{410+3OO(cal/mole)lRT} cm 3 molecule -l s -1.

Thermodynamic calculations based on group additivity methods are used to infer probable product channels for the reaction. Since the reaction between the OH radical and diacetylene is thought to be a critical pathway for hydrocarbon oxidation in fuel rich flames, the present results have implications for models of such flames. These implications are discussed.

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