Jörg Kärger, Sergey Vasenkov and Scott M. Auerbach,
``Diffusion in Zeolites,'' in Handbook of Zeolite Science
and Technology, Editors
S. M. Auerbach, K. A. Carrado and P. K. Dutta, Marcel Dekker, Inc.,
in press (2003).
Abstract
We review the basic ideas underlying diffusion in microporous
solids, and explore recent efforts over the last two decades
to measure and model the dynamics of molecules sorbed in zeolites.
We outline the many important insights that have emerged
regarding diffusion in zeolites, while also underscoring the fact
that much remains unknown. Particularly intriguing are the persistent
discrepancies among different experimental probes of diffusion for
certain zeolite-guest systems. Clarifying the origin of these
discrepant diffusion measurements is undoubtedly one of the great
challenges of future zeolite research. The eventual solution is
intimately associated with progress in our understanding of real
crystal structures and with our ability to synthesize sufficiently
ideal zeolite crystallites.
Prof SM Auerbach
10 January 2003