Paper-structured catalyst for catalytic NOx removal from combustion exhaust gas

Hirotake Ishihara, Hirotaka Koga, Takuya Kitaoka, Hiroyuki Wariishi, Akihiko Tomoda, Ryo Suzuki

研究成果: ジャーナルへの寄稿学術誌査読

16 被引用数 (Scopus)


Platinum/aluminum oxide (Pt/Al2O3) catalyst powders were successfully fabricated to give paper-like composites using ceramic fibers by a papermaking technique. As-prepared composites, called paper-structured catalysts, possessed a fiber-network microstructure on which the Pt/Al2O3 powders were scattered. The paper-structured catalysts were subjected to a catalytic reduction process of nitrogen oxides (NOx), and demonstrated a higher performance than the original Pt/Al2O3 powders and a commercial honeycomb catalyst. A simple mixture of catalyst powders and inorganic fibers was not effective, suggesting that the characteristic porous microstructure (average pore size: ca. 20 μ m, porosity: ca. 70%) in the paper-structured catalyst possibly contributed to the efficient NOx reduction. Besides, the paper-structured catalyst exhibited a quick response in the catalytic NOx reduction at a rapidly increasing reaction temperature as compared to the honeycomb catalyst. The paper composite is flexible, lightweight and easy to handle; thus the paper-structured catalyst is expected to be a promising catalytic material for exhaust gas purification.

ジャーナルChemical Engineering Science
出版ステータス出版済み - 2010

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 化学工学(全般)
  • 産業および生産工学


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