H2 production from stable ethanol steam reforming over catalyst of NiO based on flowerlike CeO2 microspheres

Abstract: Catalyst of nickle oxide based on flowerlike cerium microspheres with high dispersion was made to achieve simultaneous dehydrogenation of ethanol and water molecules on multi-active sites. XRD, 77KN2 adsorption and FESEM were applied to analyse and observe the catalyst''s structure, porosity and morphology. This special morphology catalyst represented novel stability more than 600h for hydrogen production at low temperature ethanol steam reforming. Ethanol-water mixtures could be converted into H2 with average selectivity value of 61.5mol.% and average ethanol conversion 95.0mol.% at 350°C, with GHSV∼1.0×105 h−1, low CO selectivity about average value of 2.1mol.%, during 550h reforming stability test. Catalytic parameters with respect to yield of H2, activity, selectivity towards hydrogen production and stability with time on stream were determined. [Copyright &y& Elsevier]