Investigation of soot morphology and microstructure with respect to the oxidation
EMSL Project ID
8391
Abstract
It was found that initial stages of oxidation of diesel soot are accompanied by the high reaction rate. However, upon oxidation of the first several percent of carbon, initial high reactivity is lost. This high reactivity is not related to the SOF, and can be restored by certain kinds of treatment. Better understanding of the chemical processes responsible for the initial high oxidation rate may allow us to control soot reactivity in order to enhance regeneration of soot filters. In this study we want to investigate the morphological and elemental changes with the degree of oxidation by using 13C NMR, the environmental SEM, and high resolution TEM as well as EDX analysis. 13C NMR can elucidate the different carbon species of the soot. Environmental SEM will be helpful to observe the morphological changes under the in-situ oxidation. TEM/EDX would give the information about the changes in the element near the surface. Such detailed information is expected to aid in undersanding the high initial activities of the soot oxidation.
Project Details
Project type
Capability Research
Start Date
2004-07-27
End Date
2007-03-20
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members