Health & Environmental Research Online (HERO)


Print Feedback Export to File
6239119 
Book/Book Chapter 
Chapter 5 - CO2 Methanation: Principles and Challenges 
Abate, S; Centi, G; Krebs, F; Mebrahtu, C; Palkovits, R; Perathoner, S 
2019 
1 
Studies in surface science and catalysis
ISSN: 0167-2991 
Elsevier 
Studies in Surface Science and Catalysis 
178 
85-103 
The power to gas (P2G) process has the potential to solve long-term and large-scale energy storage problems as well as reduce CO2 emissions. P2G involves CO2 methanation as a pillar of the process for the production of synthetic natural gas. Therefore, this chapter focuses on the principles and fundamental challenges of the CO2 methanation. In CO2 methanation, a catalyst facilitating high CO2 conversion and selectivity to CH4 needs to be utilized due to kinetic limitations. Ni-based catalysts are mostly studied for CO2 methanation because of their high activity and low cost. However, conventional alumina-supported Ni catalysts are easily deactivated as a result of sintering of Ni particles and coke deposition during the exothermic methanation reaction. Hence, a rational design of Ni-based catalysts with tailored properties is required. Subsequently, a brief explanation on hydrotalcite-derived materials and bimetallic catalysts as advanced Ni-based catalysts for CO2 methanation is presented. 
Power to gas 
Quadrelli, Elsje Alessandra