Production of hydrogen by catalytic steam reforming of oxygenated model compounds on Ni-modified supported catalysts. Simulation and experimental study

R. GONZÁLEZ-GIL; I. CHAMORRO-BURGOS; C. HERRERA; M.A. LARRUBIA; M. LABORDE; F. MARIÑO; L.J. ALEMANY

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2015 vol. 40 p. 11217 - 11227

0360-3199

Steam reforming of two representative components in the aqueous fraction of bio-oil,acetone and ethanol, was investigated over nickel based supported catalysts (Ni/Al2O3).The effect of Rh incorporation (NieRh/Al2O3) and the properties of differentg-Al2O3used assupport was tested. Hydrogen-rich gas is produced at temperatures higher than 673 K inboth acetone and ethanol reforming with maximum mole fraction of 0.6e0.7. The reactionsinvolved and the possible routes were studied. Rh incorporation and nanostructuredalumina affects the Ni metal size and the amount of carbon deposited onto catalysts?surface after reforming tests; besides, acetone is also found as an important intermediatein ethanol reforming, and Rh improve hydrogen production with negligible intermediatespresence. The effect of S/Acetone or S/Ethanol feed molar ratios, space velocity and temperature over acetone/ethanol conversion and over H2/CO ratio were modeled using theMatlab software in order to find the regions and the optimal operating conditions in bothprocesses. Simulation results are consistent with the experimental data.