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망간촉매를 이용한 아세트알데하이드 오존산화에서 지지체 전처리와 상대습도의 영향 KCI 등재

Effect of support pretreatment and relative humidity on acetaldehyde ozonation using manganese catalyst

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실내환경 및 냄새 학회지 (Journal of Odor and Indoor Environment)
한국냄새환경학회 (Korean Society Of Odor Research And Engineering)
초록

In this study, a manganese catalyst on the surface of a ceramic support was developed for the removal of odor emitted from barbecuing restaurants. Its ozone oxidation at room temperature was tested using acetaldehyde (CH3CHO), the most dominant compound in the barbecuing odor, and the ozonation efficiency under wet conditions was also studied. The manganese catalyst was made with the honeycomb-type ceramic support, and an acid pretreatment was applied to increase its specific surface area, resulting in an increase of the degree of dispersion of manganese oxide. The acetaldehyde removal efficiency using the manganese catalyst on the acidpretreated support (Mn/APS) increased by 49%, and the ozone decomposition rate and the CO2 conversion rate also increased by 41% and 27%, respectively. The catalyst without surface pretreatment (Mn/S) showed a low efficiency for the acetaldehyde ozonation, and other organic compounds such as acetic acid (CH3COOH) and nonanal (CH3(CH3)7CHO) were found as oxidation by-products. In comparison, CO2 was the most dominant product by the ozonation of acetaldehyde using the Mn/APS. When the relative humidity was increased to 50% in the influent gas stream, the acetaldehyde removal efficiency using the Mn/APS decreased, but only the production rates of CO2 and acetic acid were changed. As a result, the manganese oxide catalyst on the surface of the acid-pretreated honeycomb support manifested high acetaldehyde ozonation even at humid and room temperature conditions.

목차
Abstract
1. 서 론
2. 실험재료 및 방법
    2.1 망간촉매 제조
    2.2 아세트알데하이드 산화 실험
    2.3 측정방법
3. 결과 및 고찰
    3.1 망간촉매의 표면 분석
    3.2 강산 전처리에 따른 아세트알데하이드 산화 효율 평가(at dry condition)
    3.3 상대습도에 따른 아세트알데하이드 산화 효율 평가(at RH 50%)
4. 결 론
References
저자
  • 조준표(세종대학교 건설환경공학과) | Jun Pyo Cho (Department of Civil and Environmental Engineering, Sejong University)
  • 송지현(세종대학교 건설환경공학과) | JiHyeon Song (Department of Civil and Environmental Engineering, Sejong University) Corresponding author