Pulse Radiolysis, Flash Photolysis, and Shock Wave Study of the Recombination H + Benzyl -> Toluene at 300 and 1300-1650 K

Article abstract of DOI:10.1021/j100376a015

Pulse radiolysis, discharge flash photolysis, and laser flash photolysis have been employed to study the recombination reaction H + benzyl -> toluene at room temperature.Both H atoms and benzyl radicals were monitored.The same reaction was studied directly in shock waves between 1300 and 1650 K.The value of the high-pressure recombination rate constant of (2.5 +/- 0.8) * 1E14 cm³ mol^-1 s^-1 was found to be independent of the temperature between 300 and 1650 K.It is argued that high pressure rate constants for other recombination reactions should also have verysmall temperature coefficients over wide temperature ranges.Room temperature rate constants for addition of H atoms to toluene, cycloheptatriene, p-xylene, benzene, phenyl, and p-methylbenzyl are also reported.