Catalytic oxidation of polycyclic aromatic hydrocarbons (PAHs) over SBA-15 supported metal catalysts

Joo Il Park, Jihn Koo Lee, Jin Miyawaki, Seong Ho Yoon, Isao Mochida

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalJournal of Industrial and Engineering Chemistry
Volume17
Issue number2
DOIs
Publication statusPublished - Mar 25 2011

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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