Catalytic steam reforming of the bio-oil aqueous fraction represents an attractive route to hydrogen (H 2 ). In the present work, acetol (or hydroxyacetone) was selected as a representative of the ketonic fraction in bio-oil. Kinetics of acetol steam reforming was studied in a fixed-bed reactor over wide ranges in temperature, 623–773K, acetol concentration, 5–20wt%, and W/F AO ratio, 0.93–4.66gh/mol, using a commercial 5% Pt/C catalyst. It was found that the investigated reaction belongs to the kinetically controlled reaction regime systems. The increase in temperature and space time caused the expected increase in acetol conversion and H 2 yield. A single-site heterogeneous kinetic model was proposed to describe reaction kinetics. Reaction rates predicted by this model were in good agreement with the experimental rates.