| 학회 |
한국화학공학회 |
| 학술대회 |
2001년 가을 (10/19 ~ 10/20, 한밭대학교) |
| 권호 |
7권 2호, p.2525 |
| 발표분야 |
촉매/반응공학 |
| 제목 |
NH3에 의한 NO 제거 반응에서 Sulfated TiO2에 담지된 V2O5 촉매에 대한 조촉매의 영향 |
| 초록 |
The effect of tungsten and barium oxide promoters on the activity of V2O5/TiO2 catalysts for NO reduction by NH3 including the SO2 oxidation reaction has been examined. The NO removal activity of V2O5/TiO2 catalyst was enhanced by the addition of tungsten to V2O5/TiO2 catalyst. Although the tungsten oxide independently exists on the surface of TiO2 without to the interaction with vanadium species, it promoted the formation of polymeric vanadate which is strong active reaction site for NO reduction by NH3. However, it enhanced the activity for SO2 oxidation by increasing the capacity of SO2 adsorption on the surface of V2O5/TiO2 catalyst. The NO removal activity of V2O5/sulfated TiO2 was not reduced by the addition of barium oxide to the catalyst, since the state of the active reaction site of vanadium oxide was not altered on sulfated TiO2. The basic barium oxides preferentially interact with the acidic species of the sulfate on the surface of sulfated TiO2. No change of the SO2 oxidation capability of V2O5/TiO2 catalysts was observed by the addition of barium oxide to the catalyst, regardless of the presence of sulfur on the surface of TiO2. The barium oxide seems to suppress the adsorption of SO2 on the catalyst. Based on the Raman and XPS observations, the surface structure of vanadium and barium on the catalyst surface was examined to elucidate the role of sulfur on TiO2. |
| 저자 |
추수태1, 남인식2, 함성원3, 이정빈4, 엄무헌, 김기영
|
| 소속 |
1포항공과대, 2경일대, 3전력(연), 4세신전자 |
| 키워드 |
Promoters; Raman; Vanadia; SCR; NO
|
| E-Mail |
|
| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
