Chain initiation reaction in the liquid phase oxidation of sebacic acid diesters

The rates of free radical formation in the system oxygen — sebacic acid diesters have been determined at 140–170°C in o-dichlorobenzene solution. The rate constants for chain initiation are: dimethyl sebacate k₀=8.5×10¹³ exp(–39300/Rt)1/mol sec, diethyl sebacate k₀=5.1×10¹¹ exp(–33900/RT)1/mol sec, diisopropyl sebacate k₀=1.0×10¹² exp(–34700/RT)1/mol sec.The C–H bond energies in the esters studied have been estimated.

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— 140–170°C. : k₀=8,5·10¹³ exp(–39300/RT) /·, k₀=5,1·10¹¹ exp (–33900/RT) /·, k₀=1,0·10¹² exp (–34700/RT) /·. C–H .