Zeolites are hydrated aluminosilicates. Their structure consists in a three dimensional framework of AlO4 and SiO4 tetrahedrae coordinated by oxygen atoms. Zeolites are cation exchangers.Zeolites are used in a multitude applications that can be grouped into four main areas: Adsorption / Desorption of liquids and gases, Energy storage, Cation Exchange and Catalysis.