A Comprehensive Review on Artificial Zeolites: Types, Synthesis and Applications

In this review article, types, structures and classifications of the zeolites are reviewed. It is worth mentioning that, there are more than three hundred and fifty types of synthetic (artificial) zeolites are reported. Synthesis of zeolites is also reviewed in details. Synthesis of artificial zeolite in the produced countries depends on primary and secondary resources of the main component (alumina, silica and caustic soda). There are different techniques to prepare zeolite compounds. The conventional techniques are based on hydrothermal and solvothermal methods. On the other, the non-traditional techniques are microwave radiation and ultrasonic energy for the preparation of a wide range of zeolites. Zeolites can be synthesized using lss-common sources or using structure directing and mineralizing agents or using secondary aluminium and silicon sources. Mechanisms of zeolite synthesis are discussed. Different applications of zeolites are reviewed. Comprehensive review about water and industrial wastewater treatment via adsorption of pollutants on zeolites are reported.