DIFFUSION MODES IN A DIFFUSION-CELL ADSORBER

Theoretical considerations on diffusion modes of adsorbates in diffusi on-cell adsorbers are being investigated. By studying the effects of t he operating and model parameter; on the response curves calculated by surface diffusion model and pore diffusion model, and noting the diff erences in the results, the following conditions are recommended for t he prediction of the prevailing diffusion mode in diffusion-cell exper iments lambda less than or equal to 0.1, Bi-B greater than or equal to 100, and N greater than or equal to 1 The theoretical prediction thus obtained checks well with experimental data taken from literature. Ne w solutions are also presented for the surface diffusion model and the pore diffusion model with rectangular adsorption isotherm.