질소산화물의 선택적 환원을 위한 안티모니 산화물 조촉매들의 표면특성 탐구

• 영문명: Inspecting Promotive Functions of Antimony Oxides for NH3-Assisted Selective Catalytic NOX Reduction
• 발행기관: 한국세라믹학회
• 간행물 정보: 『세라미스트』제25권 제2호, 159~171쪽, 전체 13쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2022.06.30

영문 초록

It is widely accepted that Sb oxide promotes redox cycling feature and SO₂ resistance of a catalyst utilized for selective catalytic NOₓ reduction (SCR) at low temperatures (≤300 ℃). However, promotive roles of Sb oxide have never been explored with the alteration of its crystal phases, which can be crucial to direct the overall acidic/redox characteristics and SCR performance of a catalyst along with its SO₂ tolerance. In this regard, while implementing TiO₂-supported Mn oxide (Mn) as a model catalyst, we successfully isolated Sb₂O₃ and Sb₂O₅ on Mn using wet impregnation and precipitation protocols, leading to produce Mn-Sb-I and Mn- Sb-P, respectively. The resulting catalysts were verified to have comparable acidic properties, yet, exhibit distinct redox traits, as evidenced by the greatest quantity of labile oxygens for Mn-Sb-I (Sb₂O₃) compared to Mn and Mn-Sb-P (Sb₂O₅). This leads to significant enhancement of SCR performance and SO₂ resistance for Mn-Sb-I over the others.

목차

1. 서론

2. 실험 방법

3. 실험 결과 및 토의

4. 결론

Acknowledgement

REFERENCES

키워드

Sb₂O₃ Sb₂O₅ NOₓ reduction redox cycling SO₂ resistance