Table of Contents
Journal of Catalysts
Volume 2014, Article ID 612575, 6 pages
http://dx.doi.org/10.1155/2014/612575
Research Article

Hydrogen Production from the Water-Gas Shift Reaction on Iron Oxide Catalysts

1Département de Génie de l’Environnement, Ecole Nationale Polytechnique, 10 Avenue H. Badi, BP 182, El Harrach, 16200 Alger, Algeria
2Institut de Recherches sur la Catalyse et l’Environnement de Lyon, UMR 5256, CNRS-UCB Lyon1, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France

Received 11 July 2014; Revised 8 September 2014; Accepted 8 September 2014; Published 25 September 2014

Academic Editor: Hicham Idriss

Copyright © 2014 R. Bouarab et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Unsupported and supported iron oxide catalysts were prepared by incipient wetness impregnation method and studied in the water-gas shift reaction (WGSR) in the temperature range 350–450°C. The techniques of characterization employed were BET, X-ray diffraction, acid-base measurements by microcalorimetry and in situ diffuse reflectance infrared Fourier transform spectroscopy. MgO, TiO2, or SiO2 was added in order to (i) obtain a catalyst exempt of chromium oxide and (ii) study the effect of their acid-base properties on catalytic activity of Fe2O3. X-ray diffraction studies, and calorimetric and diffuse reflectance infrared Fourier transform measurements reveal a complete change in the physicochemical properties of the iron oxide catalyst after MgO addition due to the formation of the spinel oxide phase. These results could indicate that the MgFe2O4 phase stabilizes the reduced iron phase, preventing its sintering under realistic WGSR conditions (high H2O partial pressures).