Journal of Materials Science

, Volume 45, Issue 15, pp 4151–4157 | Cite as

NO X 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


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 (NO X ) in the presence of propene, for exhaust gas purification. The paper-structured catalyst demonstrated higher NO X 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 NO X gas purification.


Catalyst Layer Pulp Fiber Catalyst Powder Excellent Catalytic Performance Paper Composite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This research was supported by a Research Fellowship for Young Scientists from the Japan Society for the Promotion of Science (H. K.) and by a Risk-Taking Fund for Technology Development from the Japan Science and Technology Agency (T. K.).


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Hirotaka Koga
    • 1
  • Hirotake Ishihara
    • 1
  • Takuya Kitaoka
    • 1
  • Akihiko Tomoda
    • 2
  • Ryo Suzuki
    • 2
  • Hiroyuki Wariishi
    • 1
  1. 1.Department of Forest and Forest Products Sciences, Graduate School of Bioresource and Bioenvironmental SciencesKyushu UniversityFukuokaJapan
  2. 2.R & D Division, F. C. C. Co. Ltd.HamamatsuJapan

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