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The uniformity particle size distribution (PSD) and coarse particle size of alumina were synthesized by precipitating aluminum ammonium sulfate solution with ammonia. The effect of temperature and ammonia concentration on precipitation products was studied by using X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), laser particle size analyze and fourier transform infrared...
Zeolite NaA crystals were prepared by hydrothermal synthesis under room-temperature conditions. The products were characterized by XRD, SEM, IR and particle size analysis. Some influence parameters such as crystallization time, aging time, stirring speed, different sources of silicon and aluminum on the crystalline end products were studied. The results showed that crystallization time was a crucial...
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