Study on CO2 Reforming of CH4 by Dielectric Barrier Discharge

In this article it is demonstrated that DBD (dielectric barrier discharge) is an effective tool to convert CH₄ and CO₂ to synthesis gas (syngas, H₂/CO) at low temperature and ambient pressure. The DBD is performed in the co-axial quartz cube by using the high frequency power supply. The dielectric Al₂O₃ grains are filled in the discharge space to improve the discharge uniformity. The synthesis gas produced in this system can have an arbitrary H₂/CO ratio, mainly depending on the mixing ratio of CH₄/CO₂ in the feed gas. Specific electric energy also influences syngas composition. The amount of syngas produced strongly depends on the electric energy input. The energy consumption of syngas and the reaction process are investigated too.