The green hydrogen is considered an important energetic vector that can counterbalance the harmful effect of CO2 emission by replacing the existing energy sources. In this context, the Steam Iron Process (SIP) technology is being developed as a green and cost-effective method for hydrogen synthesis and storage. This technology is based on two-step process, where an iron oxide (oxygen carrier) is reduced into metal by a gas stream (bioethanol), to then, re-oxidizes to iron oxide by a steam flow producing pure hydrogen. However, due to the sintering process the redox performance is reduced after few redox cycles.
Thus, the mechanical alloying (MA) could increase the stability of the Fe oxide-based materials. Here, we have synthesised 95Fe-5Ti alloy, with extended limit solid solution and subsequently oxidation to form (Fe2-xTix)O3 that prevent the sintering process during numerous redox cycle.