화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.17, No.2, 271-276, March, 2011
DOI10.1016/j.jiec.2011.02.020  Export Citation
Catalytic oxidation of polycyclic aromatic hydrocarbons (PAHs) over SBA-15 supported metal catalysts
Joo-Il Park, Jihn-Koo Lee1, Jin Miyawaki, Seong-Ho Yoon†, and Isao Mochida
  • Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580, Japan
  • 1PureSphere Co. Ltd.,121 Bio-venture Center, Korea Research Institute of Bioscience and Biotechnology, 52 Eoun-dong, Yuseong-gu, Daejeon 305-806, Republic of Korea
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Naphthalene was chosen as a model reactant of PAHs, and its catalytic destruction aimed to reduce the content of PAHs in diesel fuels was investigated over three different metal (Pt, Ru and Mo) catalysts supported on SBA-15 and g-alumina. The catalysts were characterized by N2-sorption isotherms, CO and NO chemisorptions, temperature programmed desorption of naphthalene and NH3, and 27Al MAS NMR. The SBA-15 supportedmetal catalysts showed a better activity at lower reaction temperature than the galumina supported ones, most probably due to higher metal dispersion and enhanced mesoaccessibility. Pt/SBA-15 catalyst exhibited the highest activity, corresponded to Ru or Mo/SBA-15 catalyst, as reasoned by the temperature programmed desorption of naphthalene. The improved catalytic performances and thermal stability of catalysts could be achieved by incorporation of Al species into SBA-15. The characteristics of Pt states and complex on the surface of acidic supports could lead to the enhanced catalytic activity of naphthalene oxidation, as well as the limited sintering of Pt particles at high temperature, giving rise to thermal stability of catalysts.
Keywords:Polycyclic aromatic hydrocarbons (PAHs);Catalytic oxidation;SBA-15;Al-SBA-15
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