Industrial & Engineering Chemistry Research, Vol.55, No.13, 3736-3741, 2016
Sorption Enhanced Steam Reforming of Glycerol: Use of La-Modified Ni/Al2O3 as Catalyst
Glycerol is being produced on a massive scale as a byproduct of biodiesel. In this work, glycerol steam reforming was improved by CO2 abatement to obtain high-value gases. CaO and activated dolomite were used as sorbents, and these results were compared to reactions using Al2O3 and MgO. The effect of packing material was evaluated at 600, 700, 800, and 850 degrees C. Hydrogen production was promoted either in the presence of a sorbent at 600 degrees C or at higher temperatures with any of the packing material. Sorbents also affected the water gas shift reaction, decreasing the CO concentration. Simultaneous use of Ni/La2O3/Al2O3 and CaO improved gas production and hydrogen selectivity. The H-2, percentage in the produced gas was close to 70% and around 5 mol of H-2, was produced per mole of glycerol. Catalyst and sorbent were used for several reaction cycles.