In this model, ion conduction involves transitions of three states, with one three-ion state and two two-ion states in the selectivity filter respectively.

Last, the static state adsorbent activity is studied from six aspect namely, adsorptive capacity, adsorptive kinetics, adsorptive isotherm medium acidity, adsorptive selectivity and regeneration.

Variations of propylene conversion, acrolein selectivity and yield were investigated experimentally by various forced oscillation patterns and compared with the results of steady-state operation.