Synthesis of Zeolites from Pure and Natural Products, Modification and Application in Wastewater Treatment

Zeolites are microporous solids with a structure based on a rigid anionic framework with channels and cavities of well defined dimensions. They are perfectly crystallized aluminosilicates of general formula M₂/nO, Al₂O₃, zSiO₂ where n is the valence of the cation M¹. Their structure is based on a three-dimensional arrangement of TO4 tetrahedra (SiO₄ or AlO₄-) linked by oxygen atoms to form subunits and then large networks of identical blocks (the elementary meshes). The microporous structure of zeolites gives them properties that allow them to find applications in adsorption as well as in catalysis². Our choice is the mordenite type zeolite which presents remarkable properties, thanks to a microporous structure with large pores allowing the conversion of organic molecules and a great thermal stability in acidic media and at high temperatures.