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The Impact of Mesopores on Mass Transfer in Nanoporous Materials: Evidence of Diffusion Measurement by NMR
Author(s) -
Valiullin Rustem,
Kärger Jörg
Publication year - 2011
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.201000208
Subject(s) - pulsed field gradient , nanoporous , mesoporous material , mass transfer , diffusion , materials science , porous medium , mass transport , porosity , nanotechnology , chemical engineering , chemistry , thermodynamics , chromatography , engineering physics , organic chemistry , physics , composite material , catalysis , engineering
Abstract The purposeful incorporation of mesopores has become an important issue of the synthesis and post‐synthesis modification of nanoporous solids for generating transport‐optimized materials. The potentials of the pulsed field gradient (PFG) technique of NMR for assessing the transport properties of such materials are discusses and first case studies demonstrating the spectrum of information provided by the application of this technique to diffusion studies in hierarchical porous materials and the still existing limitations are presented.