Chemistry - Surface Chemistry Question with Solution | TestHub

They are used as cation exchangers

Some of the$\mathrm{S}\mathrm{i}{\mathrm{O}}_4^{-4}$units are replaced by$\mathrm{A}\mathrm{l}{\mathrm{O}}_4^{-5}$and$\mathrm{A}\mathrm{l}{\mathrm{O}}_6^{9-}$ions in zeolites

Zeolites are aluminosilicates having three-dimensional network

They have open structure which enables them to take up small molecules