Preparation and Characterization of Ni-Based Perovskite Catalyst for Steam CO₂ Reforming of Methane

Steam CO₂ reforming of methane was investigated over Ni-based perovskite catalyst to produce desired H₂/CO ratio by adjusting the feed ratio of CH₄, CO₂ and H₂O for floating GTL process application. La modified perovskites were prepared by the Pechini method and calcined in air and the Ni-based catalysts were prepared by dispersing Ni on the La modified perovskite by an incipient wetness impregnation. The catalysts before and after the reaction were characterized by N₂ physisoprtion, CO chemisoprtion, XRD, TPR and SEM techniques. To control desired H₂/CO ratio, simulation for SCR was carried out by Aspen plus, and product distribution for SCR was investigated in a fixed bed reactor system using feed ratio estimated by simulation. The Ni-based perovskite catalysts were found to give CH₄ and CO₂ conversions of up to 82% and 60% respectively to yield a H₂/CO product ratio close to 2.