[19p-W611-1~13] 8.7 Plasma phenomena, emerging area of plasmas and their new applications

[19p-W611-11] Performic Acid Synthesis by Water-Sealed Plasma-Liquid Interface Reaction of CO₂ (I)

〇Kunihide Tachibana¹, Mitsuo Kawasaki², Toshihiro Nakamura¹, Tatsuo Morita³ (1.OECU, 2.Kyoto Univ., 3.PM Dimensions)

Keywords:gas-liquid interface plasma,carbon dioxide,performic acid

We have developed a new type of plasma generation method at the gas-liquid interface, and succeeded in the synthesis of performic acid (PFA) under neutral condition with pure CO₂ as the feed gas. The characteristic feature of our device is its upside-down structure; the upper mesh electrode separates water and gas phases and discharge is generated in the gas phase below. We have performed spectroscopic diagnostics and Boltzmann analysis of the discharge plasma and concluded that PFA is generated in the reaction zone around the interface between reactive species generated from H₂O molecules and vibrationally excited CO₂ molecules.