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Updated: Feb 28, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
Absolute Quantification of Water in Microporous Solids with 1H Magic Angle Spinning NMR and Standard Addition
Maarten Houlleberghs1, Andreas Hoffmann1, Dirk Dom1
1Centre for Surface Chemistry and Catalysis, KU Leuven , Celestijnenlaan 200F, Box 2461, 3001 Heverlee, Leuven, Belgium.
Abstract:
Zeolites are microporous materials driving industrial scale adsorption, ion exchange, and catalytic processes. Their water content dramatically impacts their properties, but its quantification with Karl Fisher titration or thermal gravimetric analysis is problematic. When standard addition of water is combined with 1H magic angle spinning (MAS) NMR detection, absolute quantification of water in microporous materials becomes possible. The method was demonstrated on five different, commercially available zeolites.
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