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Pulsed field gradient NMR diffusion measurement in nanoporous materials

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Review Chemistry, Multidisciplinary

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Summary: The mass transfer in hierarchically porous materials is influenced by diffusivities in pore spaces, their populations, and exchange rates. The two-region model of diffusion, commonly known as the Karger equations, quantifies this interplay. Microscopic techniques, such as microimaging and NMR, provide experimental insight into dominant mechanisms of mass transfer, crucial for developing optimal performance enhancement strategies for such materials.

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