CATALYST FOR CATALYTIC CRACKING OF FLUIDISED BED Russian patent published in 2010 - IPC B01J21/04 B01J23/10 B01J23/70 B01J21/08 B01J27/14 B01J23/40 B01J29/80 B01J23/02 C10G11/18 

FIELD: process engineering.

SUBSTANCE: invention relates to refinery processes. Proposed catalyst comprises at least one carrier and composition with the following formula (on the bases of atomic ratio): A_aB_bP_cO_x, where A is at least one element selected from the group consisting of rare earth metals; B is at least one element selected from the group consisting of the elements from the elements of VIII, IB, IIB, VIIB and VIB groups, or the mix of at least one element selected from the group consisting of the elements of VIII, IB, IIB, VIIB and VIB groups, and at least one element selected from the group consisting of the elements of IA and IIA groups. Parametre a varies from 0.01 to 0.5. Parametre b varies from 0.01 to 0.5. Parametre c varies from 0.01 to 0.5. X is total number of oxygen atoms that satisfies the requirements of valency of every element of catalyst. Note here that aforesaid carrier represents composite molecular sieve or mix of composite molecular sieves with at least one composite molecular sieve selected from the group consisting of SiO₂ and AI₂O₃. Note also that said composite molecular sieves represent at least two sieves selected from the group consisting of ZSM-5, Y-zeolite, β-zeolite, MCM-22, SAPO-34 and mordenite. Besides catalyst molecular sieves make 0-60% of catalyst weight. Invention covers also the used of abode described catalyst in catalytic cracking of crude oil, light diesel fuel, light gasoline, catalytic cracking gasoline, gas oil, oil condensate, olefine C4 or C5.

EFFECT: higher catalytic activity at lower temperature and high selectivity in production of ethylene and polyethylene.

10 cl, 7 tbl, 20 ex