Synthesis of NaY zeolite using fluid catalytic cracking waste catalyst

A method for reclaiming Fluid Catalytic Cracking (FCC) waste catalyst: was proposed. FCC waste catalyst was used as raw material for the synthesis of NaY zeolite from silica gel, sodium hydroxide and the directing(nucleation) agent via the hydrothermal method. For comparison purposes, the reference NaY zeolite was prepared using common industrial chemicals. The effect of FCC waste catalyst pretreatment on the performance of NaY zeolite was studied. It is found that Y zeolite synthesized using alkali activated FCC catalyst possesses high crystallinity and purity. Selected sample was characterized by XRD, N ₂ adsorption-desorption techniques, TG-DTA method and temperature-programmed desorption of ammonium(NH ₃-TPD). The results indicate that the NaY zeolite has similar performances to the reference zeolite and its surface area and pore volume can reach 615 m ²·g ^-1 and 0.38 cm ³·g ^-1 respectively.