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How the stability of the microporous amorphous precursors of zeolites is affected by the Si/Al ratio
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How the stability of the microporous amorphous precursors of zeolites is affected by the Si/Al ratio

Amine Morsli, Bich Chiche, Abdelkader Bengueddach, Françoise Quignard et Francesco Di Renzo
Zeolites and related materials: Trends, targets and challenges, Vol.174(A), pp.477-480
Studies in Surface Science and Catalysis
4th International FEZA Conference (Paris, France, 02/09/2008)
2008

Résumé

supercritical drying silanols condensation silica-aluminas aerogels
The microporosity of the precursor gels of zeolite synthesis is stabilized by CO2 treatment by chemical condensation of the surface silanols. This effect is only observable in a given field of Si/Al ratio, corresponding to the appropriate density of silanols.

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