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논문 기본 정보

자료유형
학술저널
저자정보
서충길 (호원대학교)
저널정보
한국동력기계공학회 동력시스템공학회지 동력시스템공학회지 제24권 제2호
발행연도
2020.4
수록면
111 - 119 (9page)
DOI
10.9726/kspse.2020.24.2.111

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초록· 키워드

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In order to meet the stricter emission regulations of internal combustion engines based on fossil fuels, research and development of after-treatment catalyst devices for automobiles, construction machinery and ships is important and continuing. This study is to investigate the storage characteristics and reduction performance of exhaust emissions according to NOx storage material (BaO, Ca, and K) and a precious metal Pt on V₂O<SUB>5</SUB>-SCR catalysts was used in automobiles and ships. When the precious metal 2Pt was included in the V₂O<SUB>5</SUB>-SCR catalyst, the V₂O<SUB>5</SUB>-SCR 5-7 catalysts containing 2 Pt had higher concentrations of NO₂ and lower concentrations of NO. The addition of NOx adsorbents in the V₂O<SUB>5</SUB>-SCR catalyst did not improve the de-NOx/CO performance by blocking the physical and chemical reactions of V₂O<SUB>5</SUB>, thereby lowering the catalyst activity. When 2 Pt of the precious metal was included in the 5, 6, and 7 SCR catalysts containing the NOx storage material, the de-NOx performance of the SCR catalyst 5 increased to about 52% at 200℃, but at temperatures above 325℃, the conversion rate of NOx showed the negative, overall de-NOx performance decreased. When heterogeneous reactions of oxidation and reduction occur in the overall temperature range, the oxidation reaction prevails. Thus, the effect of the NOx adsorbents and 2 Pt of precious metal in V₂O<SUB>5</SUB>-SCR was negligible.

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Abstract
1. 서론
2. 실험 및 방법
3. 결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2020-550-000580620