화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO))
권호 25권 2호
발표분야 포스터-촉매
제목 Exploration of the CeVO4-based Support Composition Variation for Selective Catalytic NOX Reduction
초록 Selective Catalytic Reduction (SCR) technology is widely applied in various fields (boilers, power plants, automobiles, etc.) to remove nitrogen oxides (NOX) as a precursor of particulate materials (P.M. 2.5). V2O5/TiO2 based catalysts for hydrothermal aging effect remains challenging to be achieved so far because of phase transition of anatase TiO2. Additionally, at high temperatures, melting of V2O5 (above ~690 °C) or release of free V2O5 species affects SCR performance degradation. To overcome this problem, it is possible to inhibit the melting of V2O5 by forming a metal vanadate (e.g., the melting point of CeVO4 is ˜1680 °C) and use modified-TiO2 to enhance thermal stability. In this study, we demonstrated the possibility of using WO3 and SiO2 as a TiO2 supporter in CeVO4/TiO2 based catalysts to have thermal stability at high temperatures and to improve catalyst NOX reduction performance and N2 selectivity.
저자 김동호, 박연재, Ha Heon Phil, 권동욱
소속 한국과학기술(연)
키워드 hydrothermal aging; NOX reduction; CeVO4; TiO2
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