Structural effects on the oxidation of soot particles

Abhijeet Raj*, Seung Yeon Yang, Suk Ho Chung

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


Soot particles comprise of polycyclic aromatic hydrocarbons (PAHs), which have either planar or curved structures. The oxidation behaviors of soot particles differ depending on their structures, arrangement of PAHs, and the type of surface functional groups. To understand the role that PAH structure plays in soot reactivity towards O2, experimental studies are conducted on two types of commercially produced soot, Printex-U and Fullerene soot, using high resolution transmission electron microscopy, electron energy loss spectroscopy, thermo-gravimetric analysis and elemental analysis. The relative concentrations of active sites, oxygenated functional groups, aliphatics and aromatics present in soots are evaluated. The activation energies for soot oxidation at different conversion levels are determined. The average activation energies of the two soots are found to differ by 26 kJ/mol. This indicates that the presence of curvatures in soot can significantly enhance the rate of soot oxidation at moderate temperatures (< 800°C) which are frequently used for the regeneration of diesel particulate filters.

Original languageEnglish (US)
StatePublished - 2013
Event9th Asia-Pacific Conference on Combustion, ASPACC 2013 - Gyeongju, Korea, Republic of
Duration: May 19 2013May 22 2013


Other9th Asia-Pacific Conference on Combustion, ASPACC 2013
Country/TerritoryKorea, Republic of

ASJC Scopus subject areas

  • Environmental Engineering


Dive into the research topics of 'Structural effects on the oxidation of soot particles'. Together they form a unique fingerprint.

Cite this