Isomerization of n-C 5 /C 6 Bioparaffins to Gasoline Components with High Octane Number

The conversion processes of alternative feedstocks, e.g. biomass and waste, to different fuels result in the formation of light hydrocarbons such as C5/C6 fractions mainly as side products in boiling range of gasoline in a significant amount. The properties of the C5/C6 fractions need to be improved because of their low octane number ( 69 – 92 %. The increase of research octane number of the products compared to the feedstocks was higher with > 26 units. By the separation of n-paraffins and single-branched i-paraffins of the products, the C5/C6 isoparaffin mixture could have a high-octane number (= 92). Parallel to the isomerization, the hydrogenation of benzene and oxygen-containing compounds was complete. Accordingly, the utilization of isomerized light fractions of alternative diesel fuel production from different biomass and waste-sources can contribute to the competitiveness of second generation bio-fuels.