CO2 conversion into the useful compound is gaining increasing interest in recent years but a huge amount of energy is required to activate CO2. Recently, plasma have been appearing as an attractive alternative for CO2 activation. Among plasma technologies, a low current plasma can be a competitive and valuable alternative because it is available at atmospheric pressure and room temperature and is easy to operate. In this study, the high efficiency of CO2 activation was demonstrated using a low current arc plasma. In addition, the effect of addition of γ-Al2O3 and CaO on the CO2 conversion and energy efficiency was investigated. The CO2 conversion and energy efficiency were 10.9% and 19% without catalyst. By adding CaO, they increased to 23.3% and 46%, respectively.
Keywords CO2 decomposition, catalyst, low current arc plasma, CCU