Taking a relaxed approach : The NMR relaxation behavior of imbibed solvent has been used to estimate the surface area of a variety of microporous metal–organic frameworks and zeolites. This NMR technique is amenable to automation and can expedite the characterization of microporous materials by identifying any nonporous or low‐surface‐area structures.
Chen, Joseph J., et al. “Ex Situ NMR Relaxometry of Metal-Organic Frameworks for Rapid Surface-Area Screening.” Angewandte Chemie International Edition, vol. 52, no. 46, 2013, pp. 12043–12046., doi:10.1002/anie.201305247. https://doi.org/10.1002/anie.201305247