The response of a catalyst bed in a CSTR to a pulse of tracer gas has
been analysed using the bidisperse pore model with a crystal size dist
ribution. A parameter sensitivity analysis has shown that this system
provides an elegant way of measuring diffusion and adsorption in catal
yst pellets. It is shown that the catalyst mass is an important parame
ter determining the measurability of the diffusivity. Copyright (C) 19
96 Elsevier Science Ltd.