FIELD: petrochemical processes.
SUBSTANCE: hydrocarbon feedstock containing at least 1 vol % of at least one 5- or 6-membered cyclic hydrocarbon is subjected to preliminary processing, which consists in that feedstock is brought into contact with catalyst in presence of hydrogen under conditions favorable for selective opening of the cycle of cyclic hydrocarbon followed by isomerization stage wherein preliminarily processed feedstock comes into contact with isomerization catalyst to produce triptane-containing product stream.
EFFECT: increased selectivity of process.
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