Kinetics of oxidation of nm-sized soot spherules
Artikel i vetenskaplig tidskrift, 2008
We analyse the non-catalytic soot oxidation kinetics predicted by four models implying, respectively, (i) monosized uniform spherically
shaped soot spherules, (ii) monosized disk-like spherules formed of carbon sheets, (iii) spherically shaped spherules with a realistic
size distribution, and (iv) disk-like spherules with a realistic size distribution. In all the cases, the reaction front is considered to move
from the periphery to the center. The effect of the spherule size distribution on the oxidation kinetics is found to be appreciable and
accordingly should be taken into account in interpretations of the corresponding experiments. The latter is illustrated by scrutinizing
relevant experimental data and illustrating that model (iv) appears to be preferable.