Kinetic study on carbon dioxide hydrogenation over Ru/γ-Al2O3 catalysts

Set of Ru/γ-Al2O3 catalysts prepared by the DIM method was examined in reaction of carbon dioxide hydrogenation. Overall apparent activation energy reaches a minimum at ruthenium dispersion equal 0.5. Reaction order with respect to hydrogen decreases with H/Ru, whilst reaction order with respect to CO2 changes slightly within examined dispersion range. Two interpretations of observed isokinetic effect, calculated Tiso and corresponding wavenumber are presented.