Preparation and characterization of high antiwear NaY microspheres

Based on the commercial FCC catalyst particle size distribution,we added functional accessory ingredient into kaoline spray slurry and made use of in-situ crystallization method to prepare a kind of crystallization microspheres with low atrition index and high content of NaY zeolite.Functional accessory ingredient can increase its pore size and significantly increase their degree of crystallinity without reducing the mechanical strength.Therefore,the prepared crystallization microspheres with high crystallinity,high mechanical strength and large pore volume was an excellent FCC catalyst precursor.