Involvement of catalyst materials in nonthermal plasma chemical processing of hazardous air pollutants

Shigeru Futamura, Aihua Zhang, Hisahiro Einaga, Hajime Kabashima

研究成果: Contribution to journalConference article査読

138 被引用数 (Scopus)

抄録

Catalytic effects of metal oxides in nonthermal plasma chemical processing of hazardous air pollutants (HAPs) are discussed, relevant to their activities for the oxidation of HAPs in nonthermal plasma media and their selective control of active oxygen species derived from background O2. In ferroelectric packed-bed reactors, the oxidation power of barium titanate (BaTiO3) is not strong enough to oxidize HAPs and their carbon intermediates to CO2. Only nitrous oxide (N2O) was formed from background N2 and lattice oxygen atoms in BaTiO3. The catalytic effect of BaTiO3 is negligible under aerated conditions. On the other hand, ozone (O3) is formed from background O2 in much higher concentrations in a silent discharge plasma reactor. Manganese dioxide (MnO2)-catalyzed decomposition of O3 promotes decomposition of benzene, which is less reactive than trichloroethylene and tetrachloroethylene. The acceleration of benzene consumption rate is ascribed to the promotion of its oxidative decomposition by the triplet oxygen atom. Catalytic control of in situ active oxygen species could be one of the most effective approaches to increase the energy efficiency of the nonthermal plasma reactor and to achieve the complete oxidation of the carbon atoms in HAPs.

本文言語英語
ページ(範囲)259-265
ページ数7
ジャーナルCatalysis Today
72
3-4
DOI
出版ステータス出版済み - 3 15 2002
外部発表はい
イベントCatalysis and Plasma Technology - Washington, DC, 米国
継続期間: 8 1 2000 → …

All Science Journal Classification (ASJC) codes

  • 触媒
  • 化学 (全般)

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