Discuss some features of catalysis by zeolites.

1.	Discuss some features of catalysis by zeolites.
Answer» `to` The catalytic reaction that depends upon the pore structure of the catalyst and the size of the reactant and product molecules is called shape selective catalysts. `to` Zeolites are shope selective catalysts because of their honey comb-like structure. They are microporous alumino silicates with 3-dimensional net work of silicates. `to` Zeolites are microporous alumino silicates with dimensional network of silicates in which some Si-atoms are replaced by aluminium atoms giving Al -O-Si frame work `to` The reactions taking place in zeolites depend upon the size and shape of reactant and product molecules as well as on the pores and cavities of the zeolites. `to` Zeolites are found in nature and also synthesized for catalytic selectivity. Uses : `to` Zeolities are used as catalysts in petrochemical industries for cracking. `to` Zeolite ZSM -5 is used to covert alcohol directly into gasoline (petrol) by dehydrating them to give a mixture of hydrocarbons.

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