CO2 reforming of CH4 by atmospheric pressure glow discharge plasma: A high conversion ability

CO2 reforming of CH4 to syngas has been investigated by a special designed plasma reactor of atmospheric pressure glow discharge. High conversion of CH4, CO2, and high selectivity of CO, H2, as well as high conversion ability are carried out. The experiment is operated in wider parameter region, such as CH4/CO2 from 3/7 to 6/4, input power from 49.50 W to 88.40 W and total feed flux from 360 mL/min to 4000 mL/min. The highest conversion of CH4 and CO2 is 98.52% and 90.30%, respectively. Under the experimental conditions of CH4/CO2 rate at 4/6, input power at 69.85 W and total feed flux at 2200 mL/min, the conversion ability achieves a maximum of 12.21 mmol/kJ with the conversion of CH4 and CO2 is 60.97% and 49.91%, the selectivity of H2 and CO is 89.30% and 72.58%, H2/CO rate is 1.5, respectively. This process has advantages of relatively large treatment and high conversion ability, which is a benefit from a special designed plasma reactor.