Conversion of CO2 by gliding arc plasma

Decomposition of carbon dioxide (CO2) by gliding arc plasma was examined. The plasma device consisted of two or four triangular stainless steel plates. The gas enters through a nozzle tube from the upper part of the cylindrical reactor and exits at the bottom part of the reactor. Some additional gases, such as N-2, O-2, air, and H2O, have been used to study the dilution effects on CO2 conversion. A simple kinetic reaction model was developed to investigate the pathways of plasma reaction. Experimental results indicate that the conversion of pure CO2 reaches 18% at the total gas flow rate of 0.85 L/min and produces CO and O-2 as the final products. The effects of additional gases injection are described in detail in this paper.