천연망간광석을 이용한 선택적 촉매환원반응에서 수분에 의한 영향 및 조촉매에 의한 반응 특성 연구
Water Inhibition and Tungsten Loading Effect of SCR over NMO
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Abstract
Selective Catalytic Reduction (SCR) of nitric oxide with ammonia is widely recognized the most prominent techology to remove NOx. NMO catalyst has a great activity at low temperature below 200oC in SCR. however, in the presence of H2O, NOx removal efficiency significantly decreased. in present study, H2O inhibiting effect was investigated in SCR of NOx and tungsten loaded NMO catalyst was studied NOx removal efficency in the presence of H2O. As a result of SCR in the presence of water, H2O adsorbed at active site competitively with NH3 and it turned out that H2O effect as a inhibition. tungsten loaded NMO catalyst was increased NOx removal efficency and it was high activity at 250~300oC. it was estimated that the application is possible with the SCR catalyst.
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