Kinetic data concerning carbon black oxidation in the temperature range between 600° and 900°C have been obtained using thermogravimetric analysis. During thermogravimetric measurements the oxidizing flux does not cross the carbon black sample. Oxygen has to diffuse inside the porous medium to reach the particle surface. Modeling of this oxygen diffusion in a boundary layer above the pan and inside the porous medium coupled to oxygen reaction with carbon black is necessary to obtain kinetic constants as a function of temperature. These calculations require the knowledge of the oxidation rate at a given constant temperature as a function of the initial mass loading m 0. This oxidation rate, expressed in milligrams of soot consumed per second and per milligram of initial soot loading, decreases when m 0 increases, in agreement with a reaction in an intermediary regime where the kinetics and the oxygen diffusion operate. This oxidation rate is determined for temperatures varying in the range 600°–900°C and for three different oxygen concentrations (5%–10%–15%). The equivalent diffusivity of oxygen inside the porous medium is evaluated assuming two degrees of porosity: between soot aggregates and inside each aggregate. The carbon black oxidation is found to be first order in oxygen concentration and the kinetic constant obeys an Arrhenius equation. Two activation energies can be defined. This is due to a third degree of porosity inside each soot spherule which was not taken into account in this model. Below 700°C, an activation energy of about 103 kJ/mol can be related to a combustion reaction probably kinetically controlled. Beyond 700°C, the activation energy of about 20 kJ/mol corresponds to a reaction essentially controlled by oxygen diffusion leading to a constant density oxidation with oxygen consumption at or near the particle surface. To confirm these two different regimes, isothermal oxidations were stopped after 10%, 20%, 30%, 40%, and 60% of relative weight loss and the B.E.T. area based on N 2 adsorption determined, showing an important development of porosity at 600°C. The obtained kinetic constants can be considered as intrinsic constants accounting for the two degrees of porosity introduced in the model. To validate these data, they are used in the modeling of a Diesel particulate trap regeneration. In this particular case, the oxidizing flux is forced across the carbon black deposit, oxygen diffusion being insignificant. A good agreement between experimental results and model predictions is obtained, proving the rate constants validity.