METHOD OF PREPARING HIGH-OCTANE COMPONENT S AND MIXTURES Russian patent published in 1999 - IPC

FIELD: petrochemical processes. SUBSTANCE: hydrocarbon mixtures containing at least tertiary alkenes are brought into liquid-phase contact with heterogeneous acid catalyst(s) optionally followed by distillation of unreacted products. In reaction zone(s), where tert-alkene dimers and/or codimers are formed, contents of alcohol(s) and/or alkyl-tert-alkyl ether(s) in liquid phase are maintained from 0.1 to 50 wt % and that of water from 0.005 to 0.2 wt %. EFFECT: increased selectivity of conversion of isobutene into its dimers and codimers with n-butenes and reduced formation of trimers and oligomers. 7 cl, 4 dwg, 3 tbl, 8 ex