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Soot Cake Oxidation on a Diesel Particulate Filter: Environmental Scanning Electron Microscopy Observation and Thermogravimetric Analysis
Author(s) -
Kameya Yuki,
Lee Kyeong O.
Publication year - 2013
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201300103
Subject(s) - soot , thermogravimetric analysis , environmental scanning electron microscope , diesel particulate filter , scanning electron microscope , materials science , particulates , chemical engineering , diesel fuel , diesel exhaust , combustion , chemistry , composite material , organic chemistry , engineering
The oxidation behavior of soot cake on the porous wall of a diesel particulate filter (DPF) was investigated. As a new experimental approach to observe the soot cake during its oxidation, an environmental scanning electron microscope (ESEM) was utilized. The dynamic deformation process of the soot cake was revealed, and the contact conditions between the soot cake and the DPF wall, which is important in catalytic soot oxidation, were examined. In addition, thermogravimetric analysis (TGA) was performed and the specific reaction rate was determined. The effect of gas diffusion into the soot cake on the overall oxidation reaction rate was demonstrated. The soot cake oxidation behavior was discussed based on the ESEM observation and TGA results.