Analytical Chemistry
Analytical Chemistry
5 years ago

Absolute Quantification of Water in Microporous Solids with 1H Magic Angle Spinning NMR and Standard Addition

Absolute Quantification of Water in Microporous Solids with 1H Magic Angle Spinning NMR and Standard Addition
Francis Taulelle, Maarten Houlleberghs, Dirk Dom, Andreas Hoffmann, Christine E. A. Kirschhock, Eric Breynaert, Johan A. Martens
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.

Publisher URL: http://dx.doi.org/10.1021/acs.analchem.7b01653

DOI: 10.1021/acs.analchem.7b01653

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