In this study, the fundamental experiments were performed for catalytic oxidation of NO (50 ppm) on MnO2 in the presence of ozone. The experiments were carried out at various catalytic temperatures (30-120℃) and ozone concentrations (50-150 ppm) to investigate the behavior of NO oxidation. The honeycomb type MnO2 catalyst was rectangular with a cell density of 300 cells per squuare inch. Due to O3 injection, NO reacted with O3 to form NO2, which was adsorbed at the MnO2 surface. The excessive ozone was decomposed to O* onto the MnO2 catalyst bed, and then that O* was reacted with NO2 to form NO3-. It was found that the optimal O3/NO ratio for catalytic oxidation of NO on MnO2 was 2.0, and the NO removal efficiency on MnO2 was 83% at 30℃. As a result, NO was converted mainly to NO3-.

• 진성민(한국과학기술연구원 환경공정연구부, 한양대학교 대학원 기계공학과) | Sungmin Chin
• 정종수(한국과학기술연구원 환경공정연구부) | Jongsoo Jurng Corresponding Author
• 이재헌(한양대학교 공과대학 기계공학부) | Jae-Heon Lee
• 정주영(환경관리공단 환경시설진단처) | Juyoung Jeong