Axially Resolved Performance of Cu-Zeolite SCR Catalysts

In this work, an alternative method is proposed and validated for quantifying the axial performance of a state-of-the-art Cu zeolite SCR catalyst. Catalyst cores of a standard length, with varying lengths of wash-coated regions were used to axially resolve the functional performance of the SCR catalyst. This proposed method was validated by quantifying the catalyst entrance and exit effects, as well as the effect of non-uniform wash-coat loading densities. This method is less susceptible to some of the complications highlighted in the previous studies, such as flow uniformity between channels, as well as radiative heating effects, since the product gases are sampled across the entire monolith cross-section rather than through a single catalyst channel. The specific catalyst functions quantified include: NO and NH3 oxidation, NH3 storage capacity, as well as NOx conversion efficiency. The NOx conversion performance of the catalyst was evaluated for both the standard (NO2/NOx=0) and fast (NO2/NOx=0.5) SCR reactions as a function of both axial length and catalyst operating temperature.

• Record URL:
  • https://doi.org/10.4271/2012-01-1084
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19463936
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Henry, Cary
  • Kamasamudram, Krishna
  • Currier, Neal
  • Yezerets, Aleksey
  • Castagnola, Mario
  • Chen, Hai-Ying
• Conference:
  • SAE 2012 World Congress & Exhibition
  • Location: Detroit Michigan, United States
  • Date: 2012-4-24 to 2012-4-26
• Publication Date: 2012-4-16

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 975-984
• Serial:
  • SAE International Journal of Engines
  • Volume: 5
  • Issue Number: 3
  • Publisher: SAE International
  • ISSN: 1946-3936
  • EISSN: 1946-3944
  • Serial URL: https://www.sae.org/publications/collections/content/E-JOURNAL-03/

Subject/Index Terms

• TRT Terms: Catalysts; Chemical processes; Corrosion; Engines; Motor vehicles; Nitrogen oxides; Pollutants; Selective catalytic reduction
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01672514
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2012-01-1084
• Files: TRIS, SAE
• Created Date: Jun 19 2018 9:34AM