Mechanism Analysis and Kinetic Modeling for the NH₃-SCR with H₂O effects over Monolithic Cu-CHA Catalyst

Reactivity of monolith Cu-exchanged chabazite (Cu-CHA) catalyst was analyzed to investigate the reaction mechanisms of ammonia selective catalytic reduction (NH₃-SCR). The reactions, namely Ammonia adsorption/desorption, NO reduction, NO₂ reduction, and NH₃ oxidation, were identified using monolithic H-CHA and Cu-CHA catalyst. A kinetic model for the steady-state NH₃-SCR over monolithic Cu-CHA has been developed based on the experimental results. The adsorption heat of NH₃ was measured by temperature programmed desorption (TPD). Arrhenius parameters for NO reduction and NH₃ oxidation were also collected using a surrogate gas bench apparatus. The model predicted the catalyst efficiencies well in various conditions.

• Record URL:
  https://doi.org/10.11351/jsaeronbun.51.263
• Record URL:
  https://www.jstage.jst.go.jp/article/jsaeronbun/51/2/51_20204089/_pdf
• 
• Record URL:
  https://scholar.google.com/scholar_lookup?title=Mechanism%20Analysis%20and%20Kinetic%20Modeling%20for%20the%20NH3-SCR%20with%20H2O%20effects%20over%20Monolithic%20Cu-CHA%20Catalyst&author=W.%20Eijima&author=N.%20Shibayama&author=G.%20Shibata&author=Y.%20Kobashi&author=H.%20Ogawa&author=K.%20Shimizu&publication_year=2020
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02878321
• Authors:
  • Eijima, Wataru
  • Shibayama, Naoki
  • Shibata, Gen
  • Kobashi, Yoshimitsu
  • Ogawa, Hideyuki
  • Shimizu, Ken-ich
• Publication Date: 2020-3

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 263-267
• Serial:
  • Transactions of Society of Automotive Engineers of Japan
  • Volume: 51
  • 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: Ammonia; Catalysts; Chemical reactions; Copper; Exhaust gases; Internal combustion engines; Mathematical models; Selective catalytic reduction
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01735129
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Mar 27 2020 3:03PM