Microheterogeneous catalysis

M. Grat2el and K. Kalyanasundaram, eds.. Kinetics and Catalysis in Microheterogenous Systems, Marcel Dekker, New York, 1991. 

Kinetics and Catalysis in Microheterogeneous Systems, edited by M. Gratzel and K. Kalyanasundaram... 

Enzymes are colloids and the reactions catalyzed by them are classified accordingly as microheterogeneous. As in the case of inorganic or organic heterogeneous catalysis, it is assumed that an intermediate compound is formed between enzyme and substrate.10 ... 

Kamat PV (1991) In Gratzel M, Kalyanasundaram K (eds) Kinetics and catalysis in microheterogeneous systems, Surfactant Science Series vol 38. Marcel Dekker, New York, p 375... 

Lymar SV (1983) Photocatalytic charge separation in microheterogeneous systems based on lipid vesicles and microemulsion Thesis, Institute of Catalysis, Novosibirsk... 

The present chapter is concerned only with catalysis at the solid/liquid interface and will not deal with microheterogeneous catalysis by enzymes, micelles and polyelectrolytes even though the resulting kinetics are closely similar [4], Moreover, little reference will be made to catalytic processes involving gases as these have been the subject of Vols. 19-21 of this series, nor to catalytic polymerisations which have been treated in Vols. 14, 14A, and 15. 

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). 

J.-H. Fuhrhop, S. Svenson, in Kinetics and Catalysis in Microheterogeneous Systems, (Surfactant Science Series, Vol. 38), M. Dekker Inc., New York, 1991, 273... 

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]. 

Rolison, D.R., and Stemple, J.Z. 1993. Electrified microheterogeneous catalysis in low ionic strength media. Chemical Communications 1, 25-27. 

A recent SECM study of electrochemical catalysis at the ITIES was based on a similar concept (23). The ITIES was used as a model system to study catalytic electrochemical reactions in microemulsions. Microemulsions, i.e., microheterogeneous mixtures of oil, water, and surfactant, appear attractive for electrochemical synthesis and other applications (63). The ITIES with a monolayer of adsorbed surfactant is of the same nature as the boundary between microphases in a microemulsion. The latter interface is not, however, directly accessible to electrochemical measurements. While interfacial area in a microemulsion can be uncertain, the ITIES is well defined. A better control of the ITIES was achieved by using the SECM to study kinetics of electrochemical catalytic reduction of //zms-l, 2-dibromo-cyclohexane (DBCH) by Co(I)L (the Co(I) form of vitamin B12) ... 

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

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