The conversion of CO2 into higher-value chemicals and fuels has attracted significant interest. However, the activation of CO2 remains a great challenge as CO2 is a thermodynamically stable molecule and requires a significant amount of energy for its activation. Non-thermal plasmas offer a promising and attractive alternative for CO2 activation, providing a unique route to enable thermodynamically unfavourable reactions to proceed at ambient conditions. The combination of non-thermal plasma and heterogeneous catalysis has great potential to lower the activation energy for CO2 conversion and enhance the conversion of CO2, the selectivity of target products and the energy efficiency of the hybrid plasma-catalytic process. Plasma process can be switched on and off instantly, providing the flexibility to be combined with renewable energy sources, especially intermittent renewable energy for decentralised chemical energy storage. CO2 hydrogenation using renewable hydrogen is one of the most promising processes for CO2 conversion. In this talk, we will focus on two CO2 hydrogenation processes using plasma catalysis: (1) CO2 hydrogenation to methanol at room temperature and ambient pressure; (2) CO2 hydrogenation to methane at low temperatures and ambient pressure.

Plasma-catalytic CO2 hydrogenation to methane and methanol at ambient conditions

ACS Spring Meeting 2021

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