Explain zeolite compounds.

(N/A) If aluminium atoms replace a few silicon atoms in the three-dimensional network of silicon dioxide,the overall structure,known as aluminosilicate,acquires a negative charge. Cations such as $Na^{+}$,$K^{+}$,and $Ca^{2+}$ balance this negative charge. Examples include feldspar and zeolites.
Uses: Zeolites are widely used as catalysts in petrochemical industries for the cracking of hydrocarbons and isomerisation. For example,$ZSM-5$ (a type of zeolite) is used to convert alcohols directly into gasoline. Hydrated zeolites are used as ion exchangers in the softening of "hard" water.