| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to catalyst for catalytic cracking, to its production and use. Proposed catalyst comprises substrate including aluminium oxide and molecular sieve with the following distribution of pores: 5-70% of pores are sized to <2 nm, 5-70% of pores are sized to 2-4 nm, 0-10% of pores are sized to 4-6 nm, 20-80% of pores are sized to 6-20 nm, and 0-40% of pores are sized to 20-100 nm, proceeding from volume of pores sized to not over 100 nm. Proposed method comprises the following stages: mixing substrate including aluminium oxide or its precursors with molecular sieve, suspending and drying said mix by spray drying. Note here that in mixing, pore expander is introduced. Note also that said expander is selected from the group including boric acid and salts of alkaline metals. Note that expander-to-substrate weight ratio makes 0.1:100-15:100 in terms of substrate weight.EFFECT: great volume of catalyst's pores, high capability of cracking heavy oil products and high stability of coving.25 cl, 4 tbl, 11 ex, 1 dwg |
