The Effects of Oil-Derived Poisons on Three-Way Catalyst Performance

Two major deactivation mechanisms of automotive catalysts during road usage are: A dynamometer-based aging cycle, incorporating a high-temperature low-poison mode to account for thermal aging followed by a low-temperature high-poison mode to account for poison accumulation, has been developed to allow the examination of catalyst formulations after exposure to both a harsh thermal and chemical aging environment. This type of aging cycle results in dynamometer-aged catalysts that are physically much more similar to road-aged catalysts than thermally-based dynamometer cycles. Using this aging-cycle, Pd-only, Pd-Rh and Pt-Rh light-off catalysts were examined. The Pd-Rh catalyst gave the best overall performance, with equivalent HC light-off performance to the Pd-only catalyst and equivalent NOx performance to the Pt-Rh catalyst.

• Record URL:
  • https://doi.org/10.4271/2002-01-1093
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Lafyatis, David S
  • Petrow, Rick
  • Bennett, Chris
• Conference:
  • SAE 2002 World Congress & Exhibition
  • Location: Detroit Michigan, United States
  • Date: 2002-3-4 to 2002-3-7
• Publication Date: 2001-9-24

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Catalysts; Hazardous materials; Nitrogen oxides
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01800188
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2002-01-1093
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:21AM