| 초록 |
Selective catalytic reduction with ammonia(NH3-SCR) is the oldest commercial catalyst technology commonly used to remove nitrogen oxides from stationary source because of fossil fuels burning. Because the SCR process is used in temperature range 300–400℃, it causes maintenance costs to maintain high temperature operation condition and catalyst deactivation. As a technology that can cope with this, the Fast SCR process obtain a faster catalytic reaction and denitrification efficiency than the existing SCR process (standard SCR reaction) in the low temperature of about 200℃ by adjusting the concentration ratio of NO/NO2 to about 1. Because approximately 95% of NOx among flue gas is present as NO, an oxidation reaction step of oxidizing NO to NO2 is required before the NH3-SCR process for fast SCR reaction. In this study, MnFeOx/TiO2 was prepared as NO oxidation catalyst and characteristic evaluation was performed, and the oxidation reaction characteristics according to NO concentration, space velocity, and temperature were compared. |
