CO2-CH4 conversion and syngas formation at atmospheric pressure using a multi-electrode dielectric barrier discharge

摘要

The conversion of CO2 and CH4 into value-added chemicals is studied in a newgeometry of a dielectric barrier discharge (DBD) with multi-electrodes,dedicated to the treatment of high gas flow rates. Gas chromatography is usedto define the CO2 and CH4 conversion as well as the yields of the products ofdecomposition (CO, O2 and H2) and of recombination (C2H4, C2H6 and CH2O). Theinfluence of three parameters is investigated on the conversion: the CO2 andCH4 flow rates, the plasma power and the nature of the carrier gas (argon orhelium). The energy efficiency of the CO2 conversion is estimated and comparedwith those of similar atmospheric plasma sources. Our DBD reactor shows a goodcompromise between a good energy efficiency and the treatment of a large CO2flow rate.