화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.28, No.2, 158-164, April, 2017
DOI10.14478/ace.2016.1120  Export Citation
상용 SCR 촉매의 바나듐 표면밀도가 반응활성 및 SO2 내구성에 미치는 영향연구
Effect of Vanadium Surface Density of SCR Catalyst on Reaction Activity and SO2 Durability
원종민, 박광희, 홍성창1, †
  • 경기대학교 환경에너지공학과 일반대학원
  • 1경기대학교 환경에너지공학과
Jong Min Won, Kwang Hee Park, and Sung Chang Hong1, †
  • Department of Environmental Energy Engineering, Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 16227, Republic of Korea
  • 1Department of Environmental Energy Engineering, Kyonggi University, 4 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 16227, Republic of Korea
E-mail:
초록
본 연구에서는 다양한 상용 SCR 촉매의 NH3-SCR 반응특성을 확인하기 위하여 반응활성 및 XRD, BET, Raman 분석을 수행한다. 상용 SCR 촉매는 바나듐 함량(1.3-5.4 wt%)이 증가함에 따라 선형적으로 반응속도가 증가됨을 확인할 수 있다. 또한, 상기 분석을 통하여 VOx 표면밀도가 8.1 이상의 촉매를 선별하고, 표면 구조분석을 통해 Crystalline VOx 가 형성되지 않은 범위 내에서 촉매 내 WOx의 첨가는 TOF를 증가시키는 것으로 확인할 수 있다. SO2 내구성의 경우 바나듐 함량이 증가하면 크게 감소하는 경향을 보이며, W과 Si가 첨가될 때 내구성이 가장 크게 증가한다.
In this study, the reaction activity and XRD, BET, and Raman analysis were performed to verify NH3-SCR reaction characteristics of various commercial SCR catalysts. It can be seen that the reaction rate of each commercial SCR catalyst increased linearly with increasing the vanadium content (1.3-5.4 wt%). In addition, through the above analysis, it was possible to confirm that the addition of WOx in the catalyst increased the Turn over frequency (TOF) within the range where the VOx surface density was more than 8.1 and the crystalloid VOx was not formed through the surface structure analysis. SO2 durability tended to decrease with increasing the vanadium content, and the durability increased the most when W and Si were added.
Keywords:SCR;NOx;NH3;Surface density;Crystalline VOx
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