Temperature dependence of plasma-catalysis using a nonthermal, atmospheric pressure packed bed; the destruction of benzene and toluene

Alice M. Harling, Hyun Ha Kim, Shigeru Futamura, J. Christopher Whitehead

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A nonthermal, atmospheric pressure, packed-bed plasma reactor has been used to study the effect of temperature on the plasma-catalytic destruction of toluene and benzene in air. The plasma reactor was packed with BaTiO3 beads to which TiO2, γ-Al2O3, and Ag, Pt, or Pd impregnated catalysts were added. The reactor can be heated up to ∼500°C, and the destruction efficiencies for toluene and benzene were determined for plasma alone, catalyst alone, and the combined plasma-catalyst configuration. Comparisons have been made to determine the relative contributions of the catalyst and plasma and to discover any synergistic effects. Plasma-catalysis shows greater destruction than catalysis alone with increasing temperature for both benzene and toluene. Catalysis alone has a threshold temperature of ∼300°C for the destruction of toluene and benzene, but plasma-catalysis with Pd- and Pt-impregnated alumina achieves >95% destruction at this temperature and has a threshold of ∼100°C. Toluene is more easily destroyed than benzene at all temperatures, by all catalysts. © 2007 American Chemical Society.
    Original languageEnglish
    Pages (from-to)5090-5095
    Number of pages5
    JournalJournal of Physical Chemistry C
    Volume111
    Issue number13
    DOIs
    Publication statusPublished - 5 Apr 2007

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