Soot Oxidation Characteristics of SiC Nanoparticle Membrane Filters Tokyo Institute of Technology

Format:

Conference/Event

Author/Creator:

Nakamura, Nakamura, author.

Contributor:

Hanamura, Katsunori

Hidaka, Nobuhiro

Matsumoto, Hiroaki

Ōki, Hiroshi

Sanui, Ryoko

Tanaka, Masamichi

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

A diesel particulate membrane filter (DPMF) has good trappingefficiency of soot and reduces the pressure loss through the sootaccumulation process on the diesel particulate filter wall. Theactivation energy reduction effect of the soot oxidation reactionby DPMF was clarified. The membrane consists of SiC nanoparticleswith a diameter of 10-100 nm. A thin oxide layer is formed on theSiC particle surface, and nanoscale noble metal particles aredistributed on the surface. The reduction mechanism for theactivation energy was investigated in detail.Nanoscale soot was accumulated on DPMF from a diesel lamp.Furthermore, the soot oxidation in the regeneration process wasobserved using an optical microscope. An Arrhenius plot was madefrom the change of the concentration of the product gases CO andCO₂ with respect to time. The performance and the temperaturedependence of oxygen desorption on the oxide layer was measured bythermal desorption spectroscopy (TDS).Pt-CeO₂/ZrO₂-based materials are commonly used as oxygen storagecapacity (OSC) materials and the TDS chart shows two peaks ofoxygen desorption. However, the examined SiC exhibited only onepeak. It is expected that the oxygen-supply mechanism of thismaterial differs from the conventional reaction mechanism in OSCmaterials

Notes:

Vendor supplied data

Publisher Number:

2012-01-0848

Access Restriction:

Restricted for use by site license