NOX reduction over paper-structured fiber composites impregnated with Pt/Al2O3 catalyst for exhaust gas purification

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

研究成果: ジャーナルへの寄稿学術誌査読

23 被引用数 (Scopus)

抄録

Pt/Al2O3 catalyst powder was successfully incorporated in a microstructured paper-like matrix composed of a ceramic fiber network, by use of a simple papermaking technique. As-prepared composite, denoted paper-structured catalyst, was applied to the reduction of nitrogen oxide (NOX) in the presence of propene, for exhaust gas purification. The paper-structured catalyst demonstrated higher NOX reduction efficiency and more rapid thermal responsiveness than a conventional Pt-loaded honeycomb catalyst, indicating that the paper-like structure with interconnected pore spaces contributes to effective transport of heat and reactants to the catalyst surfaces. Furthermore, the paper-structured catalyst with the appearance of flexible paperboard has a high degree of utility. The efficiency of utilization of Pt catalyst was improved by using hierarchically assembled paper-structured catalysts with preferential location of Pt catalyst in the upper part. The paper-structured catalyst composite with paper-like utility and porous microstructure is thought to be a promising catalytic material for efficient NOX gas purification.

本文言語英語
ページ(範囲)4151-4157
ページ数7
ジャーナルJournal of Materials Science
45
15
DOI
出版ステータス出版済み - 8月 2010

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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