Cobalt ferrite with additive (alumina) has been proposed as oxygen carrier, to jointly carry out the dry reforming of a synthetic biogas, and the reduction stage of an oxide for producing hydrogen by "steam-iron" process. These reactions, as well as the associated reoxidation stage are performed within the same unit: a fixed bed reactor operating on a cyclic manner (redox) looking for the intensification at once of both, production and purification, of PEMFC quality hydrogen. This procedure is intended to be an alternative to traditional methods for producing hydrogen, which simultaneously consumes renewable raw materials and energy sources like biogas. Since catalytic activity of ferrites decays along cycles, the activity of the solid has been enhanced with the aid of small proportions of nickel aluminate with over-stoichiometric nickel oxide acting as catalyst. The addition of NiO/NiAl2O4 has allowed maintaining the catalytic activity in the reduction steps, increasing the amount of reactive solid in the subsequent oxidation steps, and hence the amount of high purity hydrogen obtained per 100 g of solid. In fact, the production of hydrogen for catalytic tests at T-reduction = 800 degrees C reaches a value around 2.6 g H-2/100 g of ferrite, when the non-catalytic counterpart gives only around 0.5 g H-2/100 g of ferrite.