Synthesis and characterization of X-type zeolite and investigation of the thermal behavior of the zeolite

X-type zeolite was synthesized under specific hydrothermal conditions and characterized by XRD, IR, and XRF techniques. The results showed that pure and high crystalline zeolite X with Si/Al ratio of 1 has been synthesized. After preparation of Na form of the zeolite (NaX), Na cations were exchanged by three alkaline earth cations. The amounts of exchanged cations per one gram of the zeolite for each cation were determined by wet chemical method. Among the various prepared samples, those containing approximately equal amounts of different cations were chosen and characterized by XRD, IR, and XRF techniques. TG and DTG techniques were employed to investigate the water desorption behavior. Enthalpy change values (ΔH) for dehydration process were obtained from DSC curves.