화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.16, No.6, 737-741, December, 2005
Export Citation
Cu/MCM-41 메조포러스 촉매 제조 및 NO 제거 특성
Preparation and Characterization of Cu/MCM-41 Mesoporous Catalysts for NO Removal
박수진†, 조미화, 김석, 권수한1
  • 한국화학연구원 화학소재연구부
  • 1충북대학교 화학과
Soo-Jin Park†, Mi-Hwa Cho, Seok Kim, and Soo-Han Kwon1
  • Advanced Materials Division, Korea Research Institute of Chemical Technology, P.O.Box 107, Yusong, Daejeon 305-600, Korea
  • 1Department of Chemistry, Chungbuk National University, Chongju 361-763, Korea
E-mail:
초록
본 연구에서는 제조한 MCM-41에 Cu의 함량에 따른 NO의 전환율을 고찰하였다. MCM-41은 실리카 원으로 colloid silica를 사용하였고, template로 cetyltrimethylammonium chloride (CTMACl)를 사용하여 수열 합성하였으며, Cu/MCM-41은 Cu(II) acetylacetonate를 사용해서 Cu의 농도를 5, 10, 20 그리고 40%로 변화시켜 제조하였다. 표면 특성은 pH, FT-IR로 분석하였고, 육방배열의 1차원 기공 구조는 XRD로 고찰하였다. N2/77 K 등온흡착 특성은 BET식과 t-plot을 이용하여 확인하였으며, NO 제거 효율은 가스크로마토그래프를 이용하여 측정하였다. 실험 결과, Si-OH와 Si-O-Si의 stretching vibration peak가 관찰되었으며, (100), (110), (200) 그리고 (210)의 육방배열의 1차원 구조를 확인하였다. Cu 금속이 도입된 MCM-41은 Cu 도입량이 증가할수록 비표면적과 미세기공부피는 감소한 반면에 NO 제거 효율은 증가하였다. 결과적으로 Cu/MCM-41의 Cu의 함량이 증가함에 따라 전체 촉매작용 반응과 NO 제거율이 증가하였다.
In this study, the effect of copper content on the NO removal efficiency by Cu/MCM-41 has been investigated. MCM-41 was prepared by hydrothermal synthesis using a gel mixture of colloidal silica solution and cetyltrimethylammonium. Cu/MCM-41 was manufactured with copper content (5, 10, 20, and 40%) in Cu(II) acetylacetonate. The surface properties of MCM-41 were investigated by using pH, XRD, and FT-IR analyses. N2/77K adsorption isotherm characteristics, including the specific surface area and micropore volume were studied by BET's equation and Boer's t-plot methods. NO removal efficiency was confirmed by gas chromatography technique. From the experimental results, the MCM-41 was analyzed to have the surface functional groups of Si-OH and Si-O-Si and the characteristic diffraction lines (100), (110), (200), and (210) corresponding to a hexagonal arrangement structure. The copper content supported on MCM-41 appeared to increase the NO removal efficiency in spite of decreasing the specific surface areas or micropore volumes. Consequently, it was found that the copper content in Cu/MCM-41 playe d an important role in improving the NO removal efficiency, which was mainly attributed to the catalytic reactions.
Keywords:MCM-41;gas chromatography;hexagonal arrangement;NO removal;Cu catalytic reaction
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