Development of Diesel PM Oxidation Catalyst

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  • Mori Takeshi
    （株）本田技術研究所　四輪R&Dセンター　第6技術開発室第1ブロック
  • Suzuki Norihiko
    （株）本田技術研究所　四輪R&Dセンター　第6技術開発室第1ブロック
  • Matsuo Yuichi
    （株）本田技術研究所　四輪R&Dセンター　第6技術開発室第1ブロック
  • Atsushi
    （株）本田技術研究所　四輪R&Dセンター　第6技術開発室第1ブロック
  • Seki Chiaki
    （株）本田技術研究所　四輪R&Dセンター　第6技術開発室第1ブロック

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Other Title
  • ディーゼルパティキュレート燃焼触媒の開発
  • ディーゼルパティキュレート ネンショウ ショクバイ ノ カイハツ

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Abstract

In order to adapt to the future stringent diesel vehicle emission regulation, it is very important to develop the high performance catalyst for oxidation of diesel particulate matter (PM). We have been trying to develop active catalysts from the viewpoint of activity of oxygen species on or in the catalytic materials, and it has turned out that the Ag/Ce material exhibits high performance particularly. In addition, we investigated the relationship between the contact degree of catalyst/PM and oxidation activity in detail, and developed the new catalyst coating method to DPF to show high performance. In this paper, we report (1) the origin of high activity of the Ag/Ce catalyst and (2) consideration of contact degree of catalyst and PM.

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