Abstract The sodium form of Faujasite Y (Na-FAU) zeolite has been synthesized by the hydrothermal method, and it exchanged with ammonium sulphate later lanthanum (III) chloride solutions to obtain La-FAU catalyst. three zeolites Na-FAU, NH 4 + -FAU have characterized microcrystalline X-ray diffraction, fluorescence, surface area, pore volume Brönsted acid sites. catalyst successfully activated ...