[16a-315-11~13] 8.8 Plasma Electronics English Session

▼ [16a-315-13] Reactivity of plasma-excited H₂O in CH₄/CO₂ reforming

〇Seigo Kameshima¹, Ryo Mizukami¹, Takumi Yamazaki¹, Lukman Prananto¹, Naoaki Koda¹, Kenta Sakata¹, Tomohiro Nozaki¹ (1.Tokyo Tech)

Keywords:Dielectric barrier discharge, Greenhouse gas, Methane reforming

Reaction enhancement induced by plasma-excited H₂O in dry methane reforming (CH₄ + CO₂ → 2H₂ + 2CO) was investigated. Solid carbon is deposited via CH₄ dehydrogenation (CH₄ → C + 2H₂) and catalyst activity is deteriorated markedly. Non-equilibrium plasma activated H₂O produced by reverse water-gas shift reaction (H₂ + CO₂ → H₂O + CO), which played an essential role of oxidizing adsorbed methane fragments into syngas (CH_x + H₂O → (2 + x)/2 H₂ + CO), leading to the suppression of solid carbon formation and the higher syngas yield. Reaction enhancement induced by excited H₂O indicates that the reaction order of H₂O is increased by non-equilibrium plasma.