Pulsed field gradient (PFG) NMR is shown to provide direct information about the various modes of molecular propagation in zeolite catalysts. By introducing a generalized Thiele modulus, the effectiveness factors of a catalytic reaction for different modes of molecular propagation can be directly compared with one another. Examples elucidating the potential of PFG NMR to contribute to a better understanding of the intrinsic processes during catalytic reactions are given.
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry