FIELD: petrochemical processes.
SUBSTANCE: liquid olefin-containing feed stream is brought into contact with activated catalyst composed of basic metal oxides or essentially basic metal oxides under olefin isomerization conditions. Catalyst has original olefin isomerization activity and contains activity affecting admixture in amount not exceeding that which would lead to reduction in catalytic activity with a rate of about 0.075% of hourly conversion loss as measured under 1-butene-to-2-butene isomerization process conditions, said activity affecting admixture being on including sulfur, phosphorus, at least one transition metal, or combination thereof.
EFFECT: increased catalytic activity.
34 cl, 5 dwg, 3 tbl, 2 ex
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