FIELD: catalytic chemistry. SUBSTANCE: aluminium oxide-carrier is loaded into reactor for alkylation. Dried benzene is fed and carrier is dried up to the moisture content in benzene at reactor outlet 50 ppm, not above. Then dried benzene is saturated with boron trifluoride up to the concentration 500-1500 ppm and fed to reactor with carrier for carrier saturation. EFFECT: improved method of catalyst producing. 1 tbl
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