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Ag/Al2O3 촉매하의 HC-SCR에서 수소 풍부 에탄올의 반응 특성Kinetics of Hydrogen Rich Ethanol as Reductant for HC-SCR over Al2O3 Supported Ag Catalyst
- Other Titles
- Kinetics of Hydrogen Rich Ethanol as Reductant for HC-SCR over Al2O3 Supported Ag Catalyst
- Issue Date
- 2010
- Publisher
- 한국수소및신에너지학회
- Keywords
- Ethanol(에탄올); Reduction(환원); Ag/Al2O3(은 담지 알루미나); NOx removal(질소 산화물 제거)
- Citation
- 한국수소및신에너지학회논문집, v.21, no.6, pp 519 - 525
- Pages
- 7
- Journal Title
- 한국수소및신에너지학회논문집
- Volume
- 21
- Number
- 6
- Start Page
- 519
- End Page
- 525
- ISSN
- 1738-7264
2288-7407
- Abstract
- Ethanol was used as reductant to remove NOx over Ag/Al2O3 catalyst via SCR from stationary emission source. Among the tested hydrocarbon reductants, ethanol showed highest de-NOx performance over the Ag/Al2O3 catalyst. De-NOx efficiency of about 83% was obtained in the condition of GHSV 20,000 hr-1, NOx 200 ppm, CO 200 ppm, O2 13%, H2O 5% and mole ratio of ethanol/NOx = 2 between temperature of 300℃ and 400℃. While SO2 presence in the NOx exhaust suppressed the catalytic activity, catalyst with acid (0.7% H2SO4) treatment of catalyst showed higher catalytic activity, where In-Situ DRIFT showed S presence over catalyst surface was increased after acid treatment of catalyst. From in-situ DRIFT and SCR results, it was concluded that sulfur presence over the surface of Ag/Al2O3 catalyst was the dominant factor to control the de-NOx reaction yield via HC-SCR from the exhausted gas including SO2.
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