| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.2260 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Selective oxidation of NH3 and CO emission with superior N2 selectivity by adding low Pt content over Vanadium-based SCR catalyst |
| 초록 |
The emission of CO and NH3 from industry and power plant exhausts is a major concern in the air pollution control. One practical aftertreatment approach is a direct use of the modified NH3-SCR catalyst in rear part as a selective oxidation of CO and slipped NH3. We report a strategy of vanadium-based SCR catalyst by adding 0.3 wt.% Pt loading (PtVW/TiO2) for the oxidation of CO along with selective catalytic oxidation of NH3. The PtVW/TiO2 catalyst showed a high N2 selectivity (>90%) at the valid temperature range (350-400 ºC), which was clearly distinct from the Pt-only catalyst. We examined the strong interaction between Pt and V over bimetallic Pt-V sites, resulting in the improved N2 selectivity. The increase of reducibility and surface acidity attributed to the enhancement of N2 selectivity. The reaction network was also identified with observations by DRIFTs, suggesting the pathway of N2 formation could be triggered by internal-SCR and CO-SCR surface reactions. |
| 저자 |
변상우1, 강성봉2, Bekelcha T. Gadisa3, 박포원3
|
| 소속 |
1GIST, 2광주과학기술원, 3(주)나노 |
| 키워드 |
촉매 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
