Synthesis of Zeolite X from Bentonite via Hydrothermal Method
Suphada Srilai, Worapak Tanwongwal, Kobchai Onpecth, Thanapat Wongkitikun, Kollayut Panpiemrasda, Gasidit Panomsuwan, Apiluck Eiad‐ua
Abstract
Zeolite X were successfully synthesized from bentonite from Lopburi province, in Thailand using the two-step of hydrothermal method under optimum condition without calcination. The first step of hydrothermal were obtained at 200 °C for 3 h to remove unreacted impurity minerals such as quartz and muscovite. The secondary step of hydrothermal were obtained at 90 °C for 120 h for synthesis of zeolite X. The characterization of zeolite X were examined by x-ray diffraction (XRD), scanning electron microscopy (SEM), and infrared spectroscopy (FT-IR), respectively. The crystal structure of product was determined as zeolite X by XRD. The morphology of SEM images for zeolite X is octahedral shape. FTIR spectra are in accordance with the other characterization results.