FIELD: polymerization catalysts. SUBSTANCE: catalyst suitable for gas-phase or liquid-phase oligomerization of ethylene and/or propane-propylene and/or butane-butylene fractions contains nickel-aluminosilicate, zeolite, and aluminum oxide and more particularly, wt %: NiO 10-80, Al2O31-50, SiO2 10-60, zeolite (pentasil type, ZSM-4, mordenite) 1-40. EFFECT: significantly lowered process temperature and increased yield of liquid oligomers ("polymer gasoline"). 2 cl, 7 tbl, 55 ex
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