CO2 Methanation over the Supported Ni Catalysts: The Structural Effect

Increasing research interests can be found in supported Ni catalyst for CO2 methanation because of the low price of the metal with comparable activity to the noble metal catalysts. CO2 methanation on Ni catalyst shows high CO2 conversion with high selectivity of methane at temperatures around 300 °C at atmospheric pressure. The established pipelines for transportation of natural gas can be directly used for the methane product. CO2 methanation on Ni catalyst has a big potential in the large-scale utilization of carbon dioxide. CO2 methanation over the Ni catalyst is a structure-sensitive reaction, with which the mechanism is still in debate. It remains a big challenge in the structural controllable preparation of the supported Ni catalyst. In this chapter, recent advances in the studies of structural effect of the supported Ni catalyst on CO2 methanation were summarized. Future development is also discussed.