FIELD: petrochemical process catalysts.
SUBSTANCE: invention provides catalyst to convert heavy olefins and paraffins C4-C8 into light olefins, in particular propylene and ethylene , which catalyst contains 30 to 80% MFI zeolite with Si/Al2 molar ratio between 300 and 600, and 20 to 70% non-acid binder selected from AlPO4 and SiO2. Described is also propylene and ethylene production process, which comprises passing feedstock stream containing 40 to 80 wt % olefins and 20 to 60 wt % C4-C-10-paraffins to reaction zone operated at 500-650°C, hydrocarbon partial pressure 70 to 280 kPa, and volumetric liquid supply rate 5 to 40 h-1. Contacting indicated feedstock with catalyst results in formation of cracked product.
EFFECT: increased catalyst selectivity.
9 cl, 2 tbl, 5 ex
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