Blending diesel fuels with bioalcohols is one of the most efficient
means to introduce a renewable fraction in the fuel, to improve its
sustainability, and to provide some oxygen content, this being
essential to reduce soot engine emissions. Additionally, compared
with biodiesel/diesel blends, alcohol/diesel (or even alcohol/biodiesel/diesel
blends) can provide similar renewable fraction, similar
oxygen content and superior soot-reduction potential with much
lower cost and energy consumption. The hydroxyl group of the
alcohol molecules contributes to reduce soot formation, and consequently
particulate emissions, even more than other functional
groups with the same oxygen content [1–3], especially at high