Coupling of adsorption and diffusion in porous and granular materials. A 1-D example of the boundary value problem

摘要

In the paper, we present a macroscopic continuum model of adsorption in porous materials consisting of three components. We consider the flow of a fluid component through channels of the skeleton. It serves as carrier for an adsorbate whose mass balance equation contains a source term. The sources as carrier for an adsorbate whose mass balance equation contains a source term. The source consists of two parts: a Langmuir contribution, connected with bare sites on internal surfaces, which becomes in equilibrium the Langmuir isotherm, and changes of the internal surface driven by the source of porosity.