Kinetics of Volatiles Loss

These results just presented, correspond to the rate determining steps 1, 2,3,6, and 7 given at the banning of this section. To account for the transport of volatiles being rate controlling (steps 4 and 5), the following analysis is applied. 

The mass flux associated with boundary layer mass transfer is given by 

If the concentration of V at the surface of the sphere, R, is near that at the reaction plane, r, boundary layer mass transfer is the rate 

TABLE 15.4 Binder Oxidation Conversion, Xp, versus Time for irinking Core Model 

Boundary layer Pore diffusion or conduction Surface reaction 

---