Production of alternative gasoline fuels

A method for producing a fuel mixture of C4 to C12 hydrocarbon fuel components, the method comprising:

• (i) catalytically reacting a plurality of biologically derived oxygenates with a condensation catalyst at a condensation temperature and condensation pressure to provide a mixture of C4+ hydrocarbons, and fractionating the mixture of C4+ hydrocarbons to provide a high octane hydrocarbon fuel component comprising a mixture of C5 to C12 hydrocarbons, wherein the mixture of C5 to C12 hydrocarbons comprises a C5 hydrocarbon or a C6 hydrocarbon, and further comprises a Cm hydrocarbon, a C11 hydrocarbon, or a C12 hydrocarbon, the high octane hydrocarbon fuel component having in the range of from 40 to 80% v/v of aromatic hydrocarbons and a research octane number (RON) of 80 or greater;
• and
• (ii) combining the high octane hydrocarbon fuel component with a low octane hydrocarbon fuel component obtained from the mixture of C4+ hydrocarbons to produce the fuel mixture of C4 to C12 hydrocarbon fuel components, the low octane hydrocarbon fuel component comprising one or more hydrocarbons selected from the group consisting of C5 to C10 hydrocarbons and mixtures thereof, and having in the range of from 75% to 100% v/v of paraffinic hydrocarbons and in the range of from 0% to 20% v/v of aromatic hydrocarbons and a RON of 70 or lower.