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Two different Brazilian fly ashes were used to selectively synthesize pure zeolites X and A by a two-step process. The zeolites were characterized in terms of mineralogical composition (XRD), morphological analysis (SEM), specific surface area (BET method), and cation exchange capacity (CEC). XRD and SEM results indicated that pure zeolites X and A were obtained from fly ash samples, possessing high...
Five different Brazilian fly ashes were used to synthesize zeolites by hydrothermal treatment. Raw fly ash materials and zeolitic products were characterized in terms of pH, conductivity, real density (Helium Pycnometry), specific surface area (BET method), morphological analysis (SEM), chemical composition (XRF), mineralogical composition (XRD) and cation exchange capacity (CEC). Humidity and loss...
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