FIELD: petrochemical processes. SUBSTANCE: aftertreatment is conducted by way bringing feedstock and hydrogen into contact with preliminarily sufided catalyst containing 8-20% molybdenum trioxide, 2- 6% cobalt and/or nickel oxide, and aluminum oxide (to 100%) at temperature 230-280 C, pressure 2.5-5.0 MPa, feedstock flow velocity 1-3 h-1, and hydrogen-to-feedstock ratio 100-150 cu.m/cu/m. EFFECT: enabled aftertreatment of feedstock with elevated contents of ss and unsaturated hydrocarbons. 2 cl, 1 tbl, 18 ex
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