CO2 conversion in a dielectric barrier discharge plasma: N2 in the mix as a helping hand or problematic impurity?

摘要: Carbon dioxide conversion and utilization has gained significant interest over the years. A novel gas technique with great potential in this area is plasma technology. lot of research already been performed, but mostly on pure gases. In reality, N2 will always be an important impurity effluent Therefore, we performed extensive combined experimental computational study effect range 1–98% CO2 splitting dielectric barrier discharge (DBD) plasma. The presence up to 50% mixture barely influences effective (or overall) energy efficiency, because metastable molecules enhance absolute conversion, compensates for lower fraction mixture. Higher fractions, however, cause a drop efficiency. Moreover, entire CO2/N2 mixing ratio, several harmful compounds, i.e., N2O NOx are produced 100 ppm. reaction pathways formation these compounds explained based kinetic analysis, which allows proposing solutions how prevent compounds.