The correct option is
B Aluminium silicate
If Al atoms replace few Si atoms in 3D-network of
SiO2, overall structure known as aluminosilicate. These are called Zeolites. These silicates are negative charged so they are balance by cations like
Na+,K+.
These hydrated zeolites are used as ion exchangers in softening of “hard” water.
Sodium aluminium silicates,
Na2Al2Si2O8, which is mainly used to remove the hardness of water.
THEORY
Zeolites: Zeolites are microporous, aluminosilicate minerals. Commonly used as commercial adsorbent and catalysts.
If Al atoms replace few Si atoms in 3D-network of
SiO2, overall structure known as aluminosilicate. These are called Zeolites. These silicates are negative charged so they are balance by cations like
Na+,K+.
- These hydrated zeolites are used as ion exchangers in softening of “hard” water.
- Sodium aluminium silicates, Na2Al2Si2O8, which is mainly used to remove the hardness of water.
- Zeolites are widely used as a catalyst in petrochemical industries for the cracking of hydrocarbons and isomerization. Hydrated zeolites are used as ion exchangers in softening “hard” water.
- ZSM-5 (A type of zeolite) used to convert alcohols directly into gasoline.