Modeling of SCR Reaction over Hydrothermally Aged Cu-CHA Catalyst

In this study, NH₃ oxidation reaction over a hydrothermally aged Cu–CHA-type SCR catalyst was studied and a model for prediction of the rate constant of the NH₃ oxidation reaction over hydrothermally aged catalyst was constructed. The results show different trends of temperature dependence on the NH₃ oxidation reaction rate above 300 ℃ for catalysts with different aging time. The structural analysis of the aged catalyst revealed that the Cu²⁺ and H⁺ active sites primarily were affected by aging and, thus, the NH₃ oxidation reaction rate at relatively lower temperatures can be determined from the number of the active sites. In contrast, the amount of CuO and the number of Cu²⁺ and H⁺ active sites can be used to determine the NH₃ oxidation reaction rate at higher temperatures.

• Record URL:
  https://doi.org/10.11351/jsaeronbun.52.31
• Record URL:
  https://www.jstage.jst.go.jp/article/jsaeronbun/52/1/52_20214027/_pdf
• 
• Record URL:
  https://scholar.google.com/scholar_lookup?title=Modeling%20of%20SCR%20Reaction%20over%20Hydrothermally%20Aged%20Cu-CHA%20Catalyst&author=K.%20Tanaka&author=H.%20Matsuda&author=T.%20Fujimoto&author=S.%20Sakaida&author=M.%20Konno&author=A.%20Tomita&author=T.%20Miki&author=A.%20Obuchi&publication_year=2021
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Tanaka, Kotaro
  • Matsuda, Hiroshi
  • Fujimoto, Teruaki
  • Sakaida, Satoshi
  • Konno, Mitsuru
  • Tomita, Atsuko
  • Miki, Takeshi
  • Obuchi, Akira
• Publication Date: 2021-1

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 31-36
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 52
  • Issue Number: 1
  • 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: Aging (Materials); Ammonia; Catalysts; Chemical analysis; Internal combustion engines; Mathematical models; Oxidation; Selective catalytic reduction
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01761718
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Dec 30 2020 5:21PM