Patent ID: 8658024

Claim:
A method of catalytic cracking of hydrocarbons comprising contacting a hydrocarbon with a catalyst under cracking conditions, and recovering the resulting product, wherein the catalyst comprises a catalyst prepared by mixing 10-65 wt % ZSM-5 zeolite which has been modified by P and one of the metals selected from Fe, Co or Ni, and having an anhydrous chemical expression, calculated by oxide, of (0˜0.3)Na 2 O.(0.5˜5)Al 2 O 3 .(1.3˜10)P 2 O 5 .(0.7˜15)M x O y .(70˜97)SiO 2 , in which M is a metal selected from the group consisting of Fe, Co, or Ni, x is the atom number of M, and Y is a number needed to satisfy the oxidation state of M, 0˜60 wt % clay, and 15˜60 wt % inorganic oxide binder, with 0.5˜15 wt % of Group VIIIB transition metal additive in which the Group VIIIB metal is Fe and 2˜25 wt % P additive; spray-drying the obtained mixture; wherein said components above are calculated by dry basis and the transition metal additive and the P additive are calculated by oxide, and wherein the contents of the transition metal additive and the P additive do not include the contents of the transition metal and P in the modified ZSM-5 zeolite.