Particulate Matter Trapping and Oxidation on a Catalyst Membrane

Particulate matter (PM) trapping and oxidation in regeneration on the surface of a diesel particulate catalyst-membrane filter (DPMFs) were investigated in detail using an all-in-focus optical microscope. The DPMF consists of two-layer sintered filters, where a SiC-nanoparticle membrane (made from a mixture of 80 nm and 500 nm powders) covers the surface of a conventional SiC filter. Using a visualization experiment, it was shown that PMs were trapped homogeneously along fine surface pores of the membrane's top surface, whereas in the regeneration process, the particulates in contact with the membrane may have been oxidized with some catalytic effect of the SiC nanoparticles. A soot cake was reacted continuously on the nanoparticles since pushed by a gas flow. The oxidation temperature of particulate trapped on the SiC-nanoparticle membrane was about 75 degrees lower than that on the conventional diesel particulate filters (DPF) without a catalyst. The activation energy of reaction on the nanoparticle membrane became lower than that on the conventional SiC-DPF without catalyst. Consequently, the SiC-nanoparticles membrane filters had some catalytic activity similar to that of the conventional catalyst DPF.

• Record URL:
  • https://doi.org/10.4271/2010-01-0808
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19463952
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Karin, Preechar
  • Hanamura, Katsunori
• Conference:
  • SAE 2010 World Congress & Exhibition
  • Location: Detroit Michigan, United States
  • Date: 2010-4-13 to 2010-4-15
• Publication Date: 2010-4-12

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References;
• Pagination: pp 368-379
• Serial:
  • SAE International Journal of Fuels and Lubricants
  • Volume: 3
  • Issue Number: 1
  • Publisher: SAE International
  • ISSN: 1946-3952
  • EISSN: 1946-3960
  • Serial URL: https://www.sae.org/publications/collections/content/E-JOURNAL-04/

Subject/Index Terms

• TRT Terms: Catalysts; Diesel engines; Fuel filters; Oxidation catalysts; Particulates; Visualization
• Uncontrolled Terms: Diesel particulate filters; Nanoparticles; Soot
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01630794
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2010-01-0808
• Files: TRIS, SAE
• Created Date: Mar 28 2017 5:08PM