Thermal, hydrothermal and acid-base stability of highly siliceous MCM-41 mesoporous material
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Influence of various thermal, hydrothermal and acid/base treatments on the structural stability of highly siliceous MCM-41 mesoporous material has been thoroughly investigated. It has good stability towards thermal treatment up to 650°C, hydrothermal treatment at low temperatures (⩽400°C), and concentrations of steam (⩽40 mol%), mechanical grinding and acid treatment (for 1 M HC1) but poor stability towards hydrothermal treatment with liquid water (even at 150°C) and base treatment, if it is dissolved in 0.1 M NaOH.
KeywordsSiliceous MCM-41 mesoporous zeolite thermal and hydrothermal stability acid-base stability
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- Coustel N D, Renzo F and Fajula F J 1994J. Chem. Soc., Chem. Commun. 967Google Scholar