FIELD: chemistry.
SUBSTANCE: invention relates to a zeolite catalyst of fluid-catalytic cracking, which passivates nickel and vanadium during catalytic cracking. The zeolite catalyst contains: Y-faujasite crystallized in situ from a metakaolin-containing calcinated microsphere; Y-faujasite is subjected to ion exchange with one or more cations of ammonium or rare earth elements, and a matrix containing aluminum oxide, obtained by calcination of dispersed crystal boehmite and kaolin contained in the metakaolin-containing calcinated microsphere, where calcination of the matrix containing aluminum oxide is carried out at a temperature suitable for conversion of dispersed crystal boehmite into aluminum gamma-oxide, where the metakaolin-containing calcinated microsphere contains up to 50 wt.% of metakaolin, and where dispersed crystal boehmite contains crystal agglomerates with an average particle size from 50 to 300 nm, formed of separate boehmite crystallites, each of which is characterized by a crystallite size from 150 to 500 . The invention also relates to a method for the reduction in coke and hydrogen polluting yield, and a method for catalytic cracking of raw materials based on heavy hydrocarbons.
EFFECT: reduction in the yield of hydrogen and coke, as well as increase in gasoline yield.
18 cl, 2 dwg, 5 tbl
Authors
Dates
2022-09-21—Published
2017-06-16—Filed