TY - JOUR
T1 - Catalytic oxidation of polycyclic aromatic hydrocarbons (PAHs) over SBA-15 supported metal catalysts
AU - Park, Joo Il
AU - Lee, Jihn Koo
AU - Miyawaki, Jin
AU - Yoon, Seong Ho
AU - Mochida, Isao
PY - 2011/3/25
Y1 - 2011/3/25
N2 - 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 γ-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 supported metal catalysts showed a better activity at lower reaction temperature than the γ-alumina supported ones, most probably due to higher metal dispersion and enhanced meso-accessibility. 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.
AB - 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 γ-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 supported metal catalysts showed a better activity at lower reaction temperature than the γ-alumina supported ones, most probably due to higher metal dispersion and enhanced meso-accessibility. 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.
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U2 - 10.1016/j.jiec.2011.02.020
DO - 10.1016/j.jiec.2011.02.020
M3 - Article
AN - SCOPUS:79955634068
SN - 1226-086X
VL - 17
SP - 271
EP - 276
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
IS - 2
ER -