| 초록 |
The low temperature NH3-SCR has been intensively studied to overcome a low energy efficiency and a high operating cost of commercial SCR systems. The main huddles for the development of the low temperature NH3-SCR catalysts are their low denitrification efficiency and durability due to moisture and SO2 in the flue gas. This study focuses on the effect of Mo addition as a promoter in V-based catalysts in the low temperature NH3-SCR. The V/Mo/TiO2 catalyst was synthesized by adjusting the ratio of Mo from 0.5 to 2 wt%. The catalytic activity and SO2 resistance were evaluated over a wide temperature range between 160-300℃. In addition, physicochemical properties and reaction properties were comprehensively investigated using XRD, TPR, TPD, and DRUV spectroscopy. As a result, it was found that the V/Mo/TiO2 with 1 wt% Mo was most effective to form a polymeric VOx structure in the catalyst, thereby resulting in a 8% improvement in the denitrification efficiency. |
