High density/high cetane renewable fuel blends

Abstract

High density renewable diesel and jet fuels have been generated by blending multicyclic sesquiterpanes with a synthetic paraffinic kerosene (5-methylundecane). The sesquiterpanes impart high density and volumetric net heat of combustion to the blends, while inclusion of the modestly branched paraffin decreases the viscosity and increases the cetane number of the blends. A surrogate diesel fuel including 65% sesquiterpanes and 35% 5-methylundecane had a cetane number of 45.7, a density of 0.853 g/ml, and a volumetric net heat of combustion (NHOC) of 133,593 btu/gal. By increasing the amount of paraffin to 60% by volume, a jet fuel surrogate was prepared with a cetane number of 57.0, a density of 0.806 g/ml, a −20° C. viscosity of 7.9 est, and a NHOC of 124,257 btu/gal. The results show that full-performance and even ultra-performance fuels can be generated by combining bio-derived sesquiterpanes and paraffins.

Dependencies are inferred from the claim text.