Plasma catalysis for CO2 methanation: catalyst and reactor optimization

2019 edition

Marti Biset Peiro

Carbon dioxide (CO2) emissions represent a huge environmental problem. Despite this, CO2 could be used as feedstock for many products, being a high abundant resource. These two facets of CO2 have resulted in a growing interest on the conversion of CO2 into add-value product to contribute to a circular economy. In this regard, a promising option is the hydrogenation of CO2, which produce an energetic product that can improve the efficiency of the energetic utilization, as a way to storage the surplus renewal energy produced in our country.

Recently, the use of plasma-catalysis process has grown interest as alternative way compared with conventional thermal-catalysis in CO2 valorisation. By the use of plasma, the reaction can take place at lower temperatures avoiding problems as catalyst deactivation, secondary reactions, formation of hot spots … Other advantages as faster switch on are very promising for the implementation in the storage of the energy coming from the renewable energy sources.

Herein, we presents the studied of plasma catalysis methanation of CO2 in a dielectric barrier discharge reactor where we have focused on the catalyst and reactor optimization.