Effect of Ca modification on the catalytic performance of Ni/AC for CO₂ methanation

abstract

The effect of Ca content on the CO₂ methanation performance of the NiCa/AC catalysts was studied in detail. The addition of Ca can effectively restrain the growth of NiO nanoparticles and improve the dispersion of NiO. The results showed that the NiCa/AC catalysts with a nickel content of 15 wt.% had better catalytic activities than that of pure Ni/AC, and the modified catalyst with 10 wt.% Ca had the highest catalytic activity among the tested catalysts.

Keywords:

• Nickel catalyst
• CO₂ methanation
• Ca modification
• stability

Funding

This work was supported by the Doctoral Scientific Research Foundation of Guilin University of Technology (No. 002401003510) and the National Basic Research Program of China (973 Program, No. 2011CB201202).