[17p-C201-1~19] 8.5 Plasma phenomena, emerging area of plasmas and their new applications

△ [17p-C201-1] Decomposition of carbon dioxide by recombining hydrogen plasma with a low electron temperature (Ⅱ)

〇Masahiro Yamazaki¹, Shusuke Nishiyama¹, Koichi Sasaki¹ (1.Hokkaido Univ.)

Keywords:Carbon Dioxide Reforming, Decomposition via vibrational excited state

We decomposed carbon dioxide using recombining hydrogen plasma with an electron temperature less than 0.5eV. The vibrational cross-section of carbon dioxide has a local maximum value at 0.2eV, and electron impact decomposition can be neglected at the low electron temperature. This clarify the decomposition via vibrational excited state of carbon dioxide. Experimentally evaluated rate coefficient of decomposition, CO2+e→products, has a maximum value around 0.2eV, and is changed by electron temperature. Also, mass spectral suggest that main product of decomposition is carbon monoxide.