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Liquid alkanes can be produced directly from glycerol by an integrated process involving catalytic conversion to H2/CO gas mixtures (synthesis gas) combined with Fischer–Tropsch synthesis. Synthesis gas can be produced at high rates and selectivities suitable for Fischer–Tropsch synthesis (H2/CO between 1.0 and 1.6) from concentrated glycerol feed solutions at low temperatures (548 K) and high pressures (1–17 bar) over a 10 wt% Pt–Re/C catalyst with an atomic Pt : Re ratio of 1 : 1. The primary oxygenated hydrocarbon intermediates formed during conversion of glycerol to synthesis gas are ethanol, acetone, and acetol. Fischer–Tropsch synthesis experiments at 548 K and 5 bar over a Ru-based catalyst reveal that water, ethanol, and acetone in the synthesis gas feed have only small effects, whereas acetol can participate in Fischer–Tropsch chain growth, forming pentanones, hexanones, and heptanones in …