| 학회 | 한국재료학회 |
| 학술대회 | 2011년 가을 (10/27 ~ 10/29, 신라대학교) |
| 권호 | 17권 2호 |
| 발표분야 | C. Energy and the Environment Technology(에너지 및 환경재료) |
| 제목 | Thermal stability of MnOx-WO3-TiO2 catalysts prepared by the sol-gel method for low-temperature selective catalytic reduction |
| 초록 | The selective catalytic reduction (SCR) of NOx by NH3 is well known as one of the most convenient, efficient, and economical method to prevent NOx emission in flue gas from stationary sources. The degradation of the reactivity is the obstacle for its real application, since high concentrations of sulfur dioxide and thermal factor would deactivate the catalyst. It is necessary to develop high stability of catalysts for low-temperature SCR. Among the transition metal oxides, WO3 is known to exhibit high SCR activity and good thermal stability. The MnOx-WO3-TiO2 catalysts prepared by sol-gel method with various WO3 contents were investigated for low-temperature SCR. These catalysts were observed in terms of micro-structure and spectroscopy analyses. The WO3 catalyst as a promoter is used to enhance the thermal stability of catalyst since it increases the phase transition temperature of TiO2 support. It was found that the addition of tungsten oxides not only maintained the temperature window of NO conversion but also increased the acid sites of catalyst. |
| 저자 | 신병길, 이희수 |
| 소속 | 부산대 |
| 키워드 | Low-temperature selective catalytic reduction; Degradation; Thermal stability; MnOx-WO3-TiO2 catalyst |
