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Home > A. Molecular pathology > catalysis


Sunday 3 April 2022


Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst.

Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quickly, very small amounts of catalyst often suffice; mixing, surface area, and temperature are important factors in reaction rate.

Catalysts generally react with one or more reactants to form intermediates that subsequently give the final reaction product, in the process regenerating the catalyst.

Catalysis may be classified as either homogeneous, whose components are dispersed in the same phase (usually gaseous or liquid) as the reactant, or heterogeneous, whose components are not in the same phase.

The enzymes and other biocatalysts are often considered as a third category.