The kinetics of the reaction of OH- with 1,3,5-trinitrobenzene in the presence of dodecyl and hexadecyl-trimethylammonium bromide have been studied. The micellar effects on this reaction have been modelized with the help of a new thermodynamic and kinetic analysis. This modelization has been based on a profitable approach proposed by De Donder and Defay which is well suited to the kinetics in dispersed medium. The chemical exchange rates (sigma)upsilon(0) and (b)upsilon(0) which are, respectively, the micellar and the bulk exchange rates, have been determined. This report also reveals that the acceleration of chemical reactions is mainly due not only to a large increase of the chemical exchange rate on the micellar aggregates, but also to the high stabilization of the activated complex.