Transport in Nanoporous Materials Including MOFs: The Applicability of Fick's Laws

Autor:	Titze, T, Lauerer, A, Heinke, L, Chmelik, C, Zimmermann, NER, Keil, FJ, Ruthven, DM, Kärger, J
Rok vydání:	2015
Předmět:	Microscopy Magnetic Resonance Spectroscopy nanoporous materials diffusion Organic Chemistry Fick's laws Biological Transport Chemical zeolites Fick’s laws Nanostructures Models Chemical Sciences Porosity metal-organic frameworks
Zdroj:	Angewandte Chemie (International ed. in English), vol 54, iss 48 Titze, T; Lauerer, A; Heinke, L; Chmelik, C; Zimmermann, NER; Keil, FJ; et al.(2015). Transport in Nanoporous Materials Including MOFs: The Applicability of Fick's Laws. Angewandte Chemie-International Edition, 54(48), 14580-14583. doi: 10.1002/anie.201506954. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/55w455qw
DOI:	10.1002/anie.201506954.
Popis:	© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Diffusion in nanoporous host-guest systems is often considered to be too complicated to comply with such "simple" relationships as Fick's first and second law of diffusion. However, it is shown herein that the microscopic techniques of diffusion measurement, notably the pulsed field gradient (PFG) technique of NMR spectroscopy and microimaging by interference microscopy (IFM) and IR microscopy (IRM), provide direct experimental evidence of the applicability of Fick's laws to such systems. This remains true in many situations, even when the detailed mechanism is complex. The limitations of the diffusion model are also discussed with reference to the extensive literature on this subject.
Databáze:	OpenAIRE
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