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

作者：Houlleberghs Maarten; Hoffmann Andreas; Dom Dirk; Kirschhock Christine E A; Taulelle Francis; Martens Johan A; Breynaert Eric^*

来源：Analytical Chemistry, 2017, 89(13): 6940-6943.

DOI：10.1021/acs.analchem.7b01653

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 H-1 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.

• 出版日期2017-7-4