화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.28, No.1, 87-94, February, 2017
DOI10.14478/ace.2016.1112  Export Citation
Mg이 첨가된 복합 알루미나 Pt촉매의 CH4-SCR 반응특성에 관한 연구
A Study on CH4-SCR Reaction Characteristics of Mg-added Composite Alumina Pt Catalysts
원종민, 홍성창1, †
  • 경기대학교 환경에너지공학과 일반대학원
  • 1경기대학교 환경에너지공학과
Jong Min Won, and Sung Chang Hong1, †
  • Department of Environmental Energy Engineering, general graduate school, Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 16772, Korea
  • 1Department of Environmental Energy Engineering, Kyonggi University, 94 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 16772, Korea
E-mail:
초록
본 연구에서는 다양한 알루미나 지지체의 CH4-SCR 반응특성을 확인하기 위하여 Pt/Al2O3를 기본으로 한 촉매에 Mg을 담지하여 습식함침법으로 제조하였다. Pt/Al2O3 촉매에 지지체인 알루미나를 복합형태(composite-Al2O3)로 바꾸고, Mg 을 담지시킬 경우 electrophobic 특성으로 인해 활성금속 Pt의 산소종을 제어하였다. 산소종이 제어된 Pt는 환원제로 사용되는 CH4에서 CO2로의 산화를 억제시킨다. 또한 Mg의 첨가는 촉매표면에서의 NOx storage 특성으로 인한 NO species 흡착 증진과 NO의 NO2로의 전환을 증진시켰다.
In this study, a catalyst based on Pt/Al2O3 supported on Mg was prepared by a wet impregnation method to investigate the CH4-SCR reaction characteristics of various alumina supports. Alumina supported on Pt/Al2O3 catalyst was converted to an Al2O3 composite, and when Mg was added, oxygen species of the active metal Pt were controlled due to electrophobic characteristics. Oxygen-controlled Pt used as a reducing agent inhibited the oxidation of CH4 to CO2. The addition of Mg also promoted the adsorption of NO species and the conversion of NO to NO2 due to the NOx storage property on the catalyst surface.
Keywords:SCR;NOx;CH4;composite-Al2O3;NOx storage
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