Microheterogeneous Micellar Catalysis

Direct or indirect predominant effect of hydrophobic interaction between nonionic micelle and either reactants or TS appears to be the source for micellar catalysis. Micelles also affect the rate of the reactions by causing proximity or shielding effect. However, if both the micelle and reactants are ionic, then the predominant combined effect of both hydrophobic and electrostatic interactions on either GS or TS will be the cause for micellar catalysis. Thus, in a broad 

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M. Gratzel and K. Kalyanasundaram (eds.) Kinetics and Catalysis in Microheterogeneous Systems, Dekker, New York, 1991. [402] E. J. Fendler and J. H. Fendler Micellar Catalysis in Organic Reactions Kinetic and Mechanistic Implications, Adv. Phys. Org. Chem. 8, 271 (1970). 

Kinetics and Catalysis in Microheterogeneous Systems, M. Gr tzel. K. Kalyana-sundaram. Eds.. Surfactant Series 38, Marcel Dekker (1991) (part on micellar catalysis, part on inorganic colloids). 

Micellar catalysis enables water to be employed as a reaction medium, to gain not only an enhancement in the rate of reaction but also improvements in selectivity and sometimes even to allow the catalyst to be recycled in a simple manner (cf. Section 3.1.1.1). A micellar system is a multiphase system in a colloidal dimension and allows the microheterogenization of a catalyst under special conditions [7]. 

Keywords Biphasic catalysis. Asymmetric phase-transfer catalysis. Micellar catalysis. Vesicles, Microheterogeneous systems... 

Bunton, C.A. Catal.Rev.-Sci. Eng., 20(1), 1 (1979) in Micellar Rate Effects upon Organic Reactions in Kinetics and Catalysis in Microheterogeneous Systems (Eds., Graetzel, M., and Kalyanasundaram, K.), Dekker, New York, 1991. 

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