Abstract

The kintetics of acid catalyzed hydrolysis of salicylhydroxamic acid (SHA) in sodium bis (2-ethyl-1-hexyl) sulfosuccinate (AOT)/isooctane/water microemulsions has been studied at 328 K. Enhancement of reaction rate has been found which depends on H2O/AOT mole ratio ω with a maximum at ω = 10.7. The effect of AOT concentration on reaction rate has been studied. The pseudo-first order rate constant decreases with [AOT] at constant ω = 12.3. Activation parameters have been obtained from the temperature dependence of the rate constant in the microemulsion. The results are discussed in terms of the chemical properties of the water molecules encased in the microemulsion droplets.

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