화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.49, No.2, 168-174, April, 2011
Export Citation
란탄 기반 페롭스카이트 촉매를 이용한 악취 유발 물질의 저온 산화 반응
Low-temperature Oxidation of Odor Compounds over La-based Perovskite Catalyst
방용주, 서정길, 이기춘1, 박찬정1, 김형태1, 송인규†
  • 서울대학교 화학생물공학부 화학공정신기술연구소, 151-744 서울특별시 관악구 관악로 599
  • 1웅진코웨이 R&D 센터, 151-919 서울특별시 관악구 낙성대동 산 4-1 서울대연구공원단지
Yongju Bang, Jeong Gil Seo, Gichun Lee1, Chan Jung Park1, Hyung Tae Kim1, and In Kyu Song†
  • School of Chemical and Biological Engineering, Institute of Chemical Processes, College of Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
  • 1Woongjin Coway R & D center, Seoul National University Research Center, 4-1 Naksungdae-dong, Gwanak-gu, Seoul 151-919, Korea
E-mail:
초록
La을 기반으로 하는 다양한 페롭스카이트 촉매를 페치니(Pechini)법에 따라 제조하고, 이 촉매를 음식물 처리 과정에서 발생하는 악취 성분의 저온 산화 반응에 적용하여 효과적인 탈취가 이루어지도록 하였다. 배출 가스의 정량 및 정성 분석을 통하여 음식물 처리 시간에 따른 주요 악취 성분의 양을 조사하였다. 그리고 주요 악취 성분들로 구성된 표준 악취 시료는 산화 반응기의 반응물로 도입하였다. 먼저, 다양한 전이 금속 M이 치환된 La 기반 페롭스카이트 촉매(LaMO3: M=Cr, Mn, Fe, Co 및 Ni)를 제조하고 전이 금속 M의 영향을 알아보기 위해 악취 성분의 산화 반응에 적용한 결과, 테스트한 촉매 중에서 LaNiO3 촉매가 가장 우수한 촉매 활성을 보였다. 또한 촉매 활성을 증진시키기 위하여 Pt가 치환된 페롭스카이트 촉매(LaNi1-xPtxO3: x=0, 0.03, 0.1 및 0.3)를 제조하였고, 이로부터 LaNi0.9Pt0.1O3 촉매 가 가장 효율적인 촉매인 것을 알 수 있었다. 끝으로 저온 산화 반응에서의 페롭스카이트 촉매의 활성을 극대화하기 위하여 담지된 페롭스카이트 촉매(XLaNi0.9Pt0.1O3/Al2O3: X=페롭스카이트 함량(wt%), 0, 10, 20, 30, 40, 50 및 100)를 적용하였다. XLaNi0.9Pt0.1O3/Al2O3 촉매의 활성은 페롭스카이트 함량에 따라 화산형(Volcano-shaped) 곡선을 나타내었으며, 이 때 20LaNi0.9Pt0.1O3/Al2O3 촉매가 180 ℃의 반응 온도에서 88.7%의 가장 높은 전환율을 보였다.
Various La-based perovskite catalysts were prepared by a Pechini method, and they were applied to the low-temperature oxidation of odor compounds exhausted from waste food treatment process for effective deodorization. Quantitative and qualitative analyses of exhausted gas were conducted to measure the amount of major odor compounds with respect to operation time. A standard odor sample composed of major odor compounds was then prepared for use as a feed for oxidation reaction system. Various transition metal(M)-substituted La-based perovskite catalysts (LaMO3:M=Cr, Mn, Fe, Co, and Ni) were prepared and applied to the oxidation of odor compounds in order to investigate the effect of transition metal M. Among the catalysts tested, LaNiO3 catalyst showed the best catalytic performance. Pt-substituted perovskite catalysts (LaNi1-xPtxO3: x=0, 0.03, 0.1, and 0.3) were then prepared for enhancing the catalytic performance. It was found that LaNi0.9Pt0.1O3 catalyst served as the most efficient catalyst. Supported perovskite catalysts (XLaNi0.9Pt0.1O3/Al2O3: X=perovskite content(wt%), 0, 10, 20, 30, 40, 50, and 100) were finally applied for the purpose of maximizing the catalytic performance of perovskite catalyst in the low-temperature oxidation reaction. Catalytic performance of XLaNi0.9Pt0.1O3/Al2O3 catalysts showed a volcano-shaped curve with respect to perovskite content. Among the catalysts tested, 20LaNi0.9Pt0.1O3/Al2O3 catalyst exhibited the highest conversion of odor compounds of 88.7% at 180 ℃.
Keywords:Perovskite;Low-temperature Oxidation;Waste Food Treatment Process;Odor Compounds;Deodorization
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