Phase transformation of zeolite P to y and analcime zeolites due to changing the time and temperature

In the present study,the synthesis of template free zeolite p under hydrothermal condition was investigated. the effects of parameters such as si/al ratios (3-45),crystallization temperatures (80-160°c),and cry (40-60 h) on the synthesis of zeolite p were studied. the phase transformation of zeolite p to two types of high crystallinity y and analcime zeolites due to change of temperature was observed. the effect of temperature on the achievement of two different zeolite types (y and analcime) with a constant initial synthetic composition under organic free synthesis of zeolite p was studied. the zeolitic products were characterized by x-ray diffraction,scanning electron microscopy,and ir spectroscopy techniques. © 2013 seyed naser azizi et al.