FIELD: petrochemical processes. SUBSTANCE: isomerization is accomplished by mixing hydrocarbon feedstock with hydrogen or hydrogen-containing gas at 170 to 270 C and pressure 0.8 to 4.0 MPa, hydrogen-to-hydrocarbon molar ratio ranging from 0.2:1 to 10:1, volumetric feedstock feeding 0.2 to 5 h-1. Process is effected on catalyst containing 0.2-1.0% platinum and/or palladium on alumina-zirconium oxide mixture (weight ratio from 0.40:1 to 0.03:1) promoted with sulfate and fluorine at weight ratios: 
. EFFECT: increased process selectivity. 2 tbl, 15 ex
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