Abstract
Water vapor isotherms were examined and 1H-magic-angle spinning nuclear magnetic resonance (1H-MAS NMR) analysis was conducted to determine the amount of water vapor adsorbed and desorbed on hydrothermally solidified materials derived from clay minerals. The amount of water vapor adsorbed and desorbed decreased with increasing mesopore volume of the materials, which disagreed with the estimation obtained using the Kelvin equation. Water vapor was physisorbed on alumina-like sites in the materials. An increase in the binding energy between water vapor and the materials led to an improvement in the water vapor adsorption-desorption properties of materials.
Original language | English |
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Pages (from-to) | 2125-2128 |
Number of pages | 4 |
Journal | Journal of the American Ceramic Society |
Volume | 92 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2009 Sep 1 |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry