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A diffusion cell for the mass transfer investigation of the gases through the solid porous media is developed. The diffusion cell may be configured in two different ways. One configuration corresponds to the reflecting boundary condition, whereas another configuration satisfies the absorbing boundary. The mass balance equations for different cell configurations are provided. The mass balance equations are applicable for the calculations of the diffusate quantity decays. The latter are suitable for the mass transfer parameters estimation using the solutions of the transport equations, obtained for the boundary conditions that correspond to the diffusion cell configurations. Accounting for the impact of the apparatus function of the diffusion cell on the experimental data is also revisited. In addition, the practical use of the diffusion cell based on the installation of the cell into the gas chromatograph for the investigation of the methane transport through the porous silica pellet as an example is demonstrated.

A Diffusion Cell for the Mass Transfer Investigation in the Solid Porous Media