Development of Reduced PGM Three-Way Catalysts Enhanced NOx Purifying Activity

NOx 浄化機能を高めた貴金属低減三元触媒の開発

In response to the growing awareness for environmental protection, automobile emissions regulations are gradually becoming more stringent all over the world. Moreover, the amount of precious metals used for automobile catalysts is required to decrease in order to lower the consumption of natural resources. As a consequence, further improvements to catalysts which contribute to a decrease in the amount of precious metals used while satisfying emission regulations are greatly needed. In this report, with the application of nanoparticle rhodium (Rh) clusters along with a high thermal stabilized pyrochlore-ceria/zirconia (CZ) catalyst, high performance three-way catalyst has been developed. Moreover, a zone coat strategy has been developed which improves cold start catalytic performance.新規材料として，Rh クラスターと，高耐熱型パイロクロアCZ を適 応する事で，排気ガスの雰囲気変動に対するロバスト性が高く，優れた NOx 浄化能を有する触媒を開発した．また，ガス流れ方向に最適なコート 材を配置するゾーンコート技術の進化，浄化機能全体のバランス強化によ り，大幅な貴金属低減を可能とした．

• Record URL:
  https://doi.org/10.11351/jsaeronbun.46.239
• Record URL:
  http://scholar.google.com/scholar_lookup?title=Development%20of%20Reduced%20PGM%20Three-Way%20Catalysts%20Enhanced%20NOx%20Purifying%20Activity&author=M.%20Miura&author=Y.%20Aoki&author=N.%20Kabashima&author=T.%20Fujiwara&author=T.%20Tanabe&author=A.%20Morikawa&author=H.%20Ori&author=H.%20Nihashi&author=S.%20Matsui&publication_year=2015
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Miura, Masahide
  • Aoki, Yuki
  • Kabashima, Nobusuke
  • Fujiwara, Takahiko
  • Tanabe, Toshitaka
  • Morikawa, Akira
  • Ori, Hirotaka
  • Nihashi, Hiroki
  • Matsui, Suguru
• Publication Date: 2015-3

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 239-244
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 46
  • Issue Number: 2
  • Publisher: Society of Automotive Engineers of Japan
  • ISSN: 0287-8321
  • EISSN: 1883-0811
  • Serial URL: https://www.jstage.jst.go.jp/browse/jsaeronbun
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Catalysts; Coatings; Cold starts (Driving); Exhaust gases; Heat engines; Nanostructured materials; Nitrogen oxides; Platinum; Regulations; Zirconium
• Uncontrolled Terms: Cesium; Rhodium
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01666871
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Apr 23 2018 4:47PM