A non-driving-force approximation for intraparticle diffusion and reaction

摘要

A non-driving-force approximation is presented for the description of dynamic response of a spherical porous particle subject to a step change in the surface concentration. Intraparticle adsorption, diffusion and a first-order reaction occurring within the porous particle are considered in the present formula. Excellent agreement between the present approximation and the exact solution was found over the entire lime domain. In terms of accuracy, the present approximation is superior to the previously reported ones. [References: 11]