A comparative study of carbon black and diesel soot reactivity in the temperature range 500–600°C—effect of additives

Narrowing the size distribution of aerosol-made titania by surface growth and coagulation

“…For instance, particle temperatures higher than those at the surrounding carrier gas (Lehtinen & Zachariah, 2002) by selective particle heating with microwaves could accelerate surface growth reactions (Liu, Lu, Liu, Gao, & Yin, 1998). Finally, increased surface reactivity could be achieved also by absorption of energy as in laser reactors (White & Peerey, 1980) or most commonly by doping and the use of co-oxidation additives, as in soot formation where surface oxidation is enhanced by additives containing iron or copper (Bonnefoy, Gilot, Stanmore, & Prado, 1994).…”

Influence of the surface potassium species in Fe–K/Al2O3 catalysts on the soot oxidation activity in the presence of NOx

“…This carbon black was selected due to its identical behavior upon thermogravimetric oxidation in air, vis-à-vis laboratoryproduced diesel soot. Still, the use of a carbon black can be considered as a conservative experimental approach, since the presence of soluble organic fraction (SOF) in real soot contributes to increased reactivity [37]. Each catalyst was introduced for 1 min into a continuously stirred dispersion of 0.2 g of carbon black in 100 mL n-pentane, then dried at 65ºC during 1 hour.…”

Oxidation characteristics of gasoline direct-injection (GDI) engine soot: Catalytic effects of ash and modified kinetic correlation

“…Wang et al [13] studied the oxidation reactivity of in-cylinder soot during the diesel combustion process, and found that the aliphatic C-H groups are more important in governing soot oxidation reactivity than oxygenated surface functional groups. It is well known that metal additives in fuel contribute to higher soot oxidation reactivity, due to the catalytic effects of metal oxides in particulate emissions [14][15][16][17][18]. The effects of lube oilderived ash and metallic species on soot oxidation remain less clear because their fractions are typically low.…”