| 초록 |
This work discusses the efficient degradation of acetaldehyde in a dielectric barrier discharge reactor at room temperature with and without catalysts. The discharge characteristics, acetaldehyde conversion, and possible destruction pathways have been investigated in different discharge gases, like N2, O2, and Air. It is found that the presence of oxygen can accelerate acetaldehyde degradation. The order of acetaldehyde degradation efficiency in plasma was pure O2＞ Air＞ pure N2. However, the CH3CHO oxidation is incomplete that results in the formation of unwanted byproducts. To overcome this limitation, the combination of plasma with either Ag/Al2O3 or Ag/ZSM5 catalysts deserves to be investigated. The results show that the highest acetaldehyde adsorption and removal efficiency are achieved with Ag/ZSM5 plasma catalyst. Based on the findings in this work, a new plausible mechanism of plasma-driven catalysis of acetaldehyde was proposed. |
