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Zeolites are crystalline solids with microscopic pores.
Zeolites have the ability to act as heterogeneous catalysts for chemical reactions. These reactions take place within the internal cavities.
Zeolites are selective catalysts because the shape and size of particular pores within the zeolite system influences the access of reactants and products. This means they can be used to carry out very specific syntheses, for example in the production of high-value pharmaceuticals and cosmetics.
Zeolites are used in many organic reactions, including crude oil cracking, isomerisation and fuel synthesis. Zeolites can also serve as oxidation or reduction catalysts.