We introduce the various options of experimentally observing mass transfer in mesoporous
materials. It shall be demonstrated that the exploration of the underlying mechanisms is …

Surface barriers to mass transfer in various nanoporous materials have been increasingly
identified. These past few years especially, a significant impact on catalysis and separations …

Following a brief review of Fick's laws and the theory of diffusion in a homogeneous
medium, we consider the application of the Fickian model to diffusion in nanoporous …

Labeling in diffusion measurements by pulsed field gradient (PFG) NMR is based on the
observation of the phase of nuclear spins acquired in a constant magnetic field with …

Advances in materials synthesis bring about many opportunities for technological
applications, but are often accompanied by unprecedented complexity. This is clearly …

PFG NMR has been applied to study intracrystalline diffusion in USY zeolite as well as in the
parent ammonium-ion exchanged zeolite Y used to produce the USY by zeolite steaming …

Applications of zeolites in catalysis are plagued by strong diffusion resistance, which results
from limitations to molecular transport in micropores, across external crystal surfaces, but …

The impact of particle size and internal grain boundaries of Beta zeolites was investigated in
n-pentane isomerization over bifunctional Pt/Beta catalysts, by comparing the catalytic …

Diffusion, that is, the irregular movement of atoms and molecules, is a universal
phenomenon of mass transfer occurring in all states of matter. It is of equal importance for …

This chapter is intended to provide a general introduction to the basic principles of
adsorption equilibrium and kinetics, which is the focus of the present volume. The discussion …