Several techniques can be used to measure effective diffusivity in catalytic materials:
Pulsed Field Gradient NMR: This technique uses magnetic fields to measure the diffusion of molecules within the pores of the catalyst. Steady-State Methods: These involve measuring the flux of molecules through a porous sample under a constant concentration gradient. Transient Methods: These methods measure the response of the system to a sudden change in concentration, such as in a pulse-response experiment.
