| 초록 |
NOx emission regulations have been strengthened and demands for efficient NOx removal systems have been grown. NH3 selective catalytic reduction is considered as an effectual NOx removal technique. In particular, vanadium-based catalysts have been used for NOx removal from stationary sources. To achieve higher NOx conversion at low temperature, monoethanolamine(MEA) was added in preparation of V/MPTiO2 catalysts. In the present study, the addition of MEA demonstrates a better NOx conversion at low temperature and maintains higher NH3 conversion over the temperature range. Also, V/MPTiO2 with MEA has a larger amount of adsorbed ammonia based on NH3-TPD, which is beneficial in SCR reaction, and more Bronsted acid sites existed based on the in-situ DRIFTS spectra. Based on the characterizations, our research suggests that vanadium based catalysts could have improved catalytic activity with larger extent of adsorbed ammonia and Bronsted acid site when MEA is added in preparation process. |
