CO2 Hydrogenation to Synthetic Natural Gas over Ni, Fe and Co–Based CeO2–Cr2O3

CO2 methanation was studied over monometallic catalyst, i.e., Ni, Fe and Co; on CeO2-Cr2O3 support. The catalysts were prepared using one-pot hydrolysis of mixed metal nitrates ammonium carbonate. Physicochemical properties the pre- post-exposure characterized by X-Ray Powder Diffraction (XRD), Hydrogen Temperature Programmed Reduction (H2-TPR), Field Emission Scanning Electron Microscope (FE-SEM). screening three dopants for conducted in a milli-packed bed reactor. Ni-based catalyst proven to be most effective among all. Thus, group NiO/CeO2-Cr2O3 with Ni loading investigated further. 40 % exhibited highest conversion 97.67% CH4 selectivity 100% at 290 °C. catalytic stability tested towards reaction 50 h time-on-stream experiment, showing good term activity.