In situ investigation of the CO2 methanation on carbon/ceria-supported Ni catalysts using modulation-excitation DRIFTS

The development of novel cost-efficient, high-performing catalysts for CO2 methanation that are active at low temperatures can be optimized through the understanding reaction mechanism on different materials. A series Ni-based supported CeO2 and carbon/CeO2 composites was investigated, showing Ni nanoparticles a composite with 50:50 wt ratio pure have excellent low-temperature activity achieve up to 87% conversion full selectivity towards CH4 370 °C. Importantly, meaningful insights were gathered types materials by using emerging ME−PSD−DRIFTS technique. study rate formation/consumption various intermediates showed follows combination CO formate pathways in case CeO2; however, composite, it only pathway.