Applied Chemistry for Engineering, Vol.33, No.6, 594-599, December, 2022
NH3-SCO 반응에서 Vanadium 담지함량이 Pt/V/TiO2 촉매에 미치는 영향
Effect of Vanadium Loading Amount on Pt/V/TiO2 Catalyst on NH3-SCO Reaction
초록
본 연구에서는 Pt/V/TiO2 촉매 제조 시, V 담지 함량에 따른 NH3-SCO (selective catalytic oxidation) 반응 활성을 비교하 였다. NH3 전환율 및 N2 선택성을 모두 고려하였을 때, V이 2 wt% 담지된 촉매에서 가장 우수한 성능을 나타내었다. 이에 따라 물리/화학적 특성과 반응활성과의 상관관계를 확인하였을 때, 격자산소종의 증가 및 (V3+ + V4+) 비율의 증가가 활성인자임을 확인하였다. 또한 가장 우수한 촉매를 이용하여 SO2 내구성 실험을 진행하였을 때, 고농도의 SO2가 주입되더라도 영향이 미미함을 확인하였다.
In the study, NH3-SCO (selective catalytic oxidation) reaction activity accodrding to vanadium loading amount were compared when preparing Pt/V/TiO2. Considering both NH3 conversion rate and N2 selectivity, V 2 wt% loading of the catalyst showed the best activity. When the correlation between physical/chemical characteristics and reaction activity was confirmed, it was confirmed that the increase in lattice oxygen and (V3+ + V4+) ratios were active factor. In addition, when the SO2 durability experiment was conducted using the best catalyst, it was confirmed that the influence was insignificant even if the high concentration of SO2 was injected.