HYDROGEN FROM ETHANOL ON IRON OXIDES CATALYSTS

NICOLÁS A. FELLENZ, ANA M. ALVAREZ, JOSE F. BENGOA, NORMA G. GALLEGOS, MARÍA V. CAGNOLI AND SERGIO G. MARCHETTI

APPLIED CATALYSIS A-GENERAL

ELSEVIER SCIENCE BV

Lugar: Netherlands; Año: 2009 vol. Env.

0926-860X

Hydrogen production, free of CO, from ethanol hydrotreatment was studied using iron oxide catalysts. Bulk γ-Fe2O3 and Fe3O4 were synthetized using Fe(III) hydroxiacetate as an intermediate compound during the preparation step. The fresh and used catalysts were characterized by X-ray diffraction (XRD), N2 adsorption (BET), Diffuse Reflectance Spectroscopy (DRS), Mössbauer spectroscopy at 298 K and Thermo Gravimetric Analysis (TGA). The solids were used in the range of 573 to 758 K. A CO free Hydrogen production, nearly to the ideal one, was reached when Fe3O4 was used as catalyst. The redox properties of the couple Fe2+-Fe3+ located in the spinel structure seem to be responsible of this behaviour.