Process for converting C.sub.4 olefinic cracking cuts to alkylate and gasoline

摘要

A process is provided for selectively polymerizing isobutene in an olefinic C.sub.4 cut comprising isobutene and normal butenes by contacting the cut with a catalyst consisting essentially of silica- alumina; whereby at least 90% of the isobutene and less than 10% of the normal butenes in the cut are converted.