| abstract |
A process for producing gasoline of improved octane number comprises oligomerising one or more alkenes, and optionally one or more alkanes, having from 2 to 6 carbon atoms over either silicalite (whether stabilized or not) or zeolite, optionally in the presence of water, etherifying the resulting hydrocarbon mixture in the presence of methanol over an acid cation exchange catalyst, extracting the residual methanol with water and distilling the methanol-free etherified effluent. |