Combination of plasmas and catalytic reactions for CO₂ reforming of CH₄ by dielectric barrier discharge process

다국어 초록 (Multilingual Abstract)

Dry reforming of methane that converts two green-house gases (CH<SUB>4</SUB> and CO<SUB>2</SUB>) to syngas (mixture of CO and H<SUB>2</SUB>) has gained a great research interests. In this research, we investigated the CO<SUB>2</SUB> reforming of CH<SUB>4</SUB> to syngas by the combination of dielectric barrier discharge (DBD) plasmas and zeolite catalyst particles, which was effective in converting the CO<SUB>2</SUB> and CH<SUB>4</SUB> into syngas. The effects of peak voltage applied to plasmas, total gas flow rate and input CO<SUB>2</SUB>/CH<SUB>4</SUB> molar ratio on CO<SUB>2</SUB> and CH<SUB>4</SUB> conversions and H<SUB>2</SUB> and CO selectivities were investigated. The product gases were mainly composed of H<SUB>2</SUB> and CO with some generation of by-products. The conversion efficiencies of CO<SUB>2</SUB> and CH<SUB>4</SUB> in DBD plasmas with zeolite catalyst increased by the increase of voltage applied to plasmas. The selectivities of CO and H<SUB>2</SUB> depend largely on the voltage applied to the plasmas and the ratio of CO<SUB>2</SUB> to CH<SUB>4</SUB>, but did not depend significantly on the changes of frequency and total gas flow rate.