Abstract
ZEOLITES (microporous aluminosilicates) and related molecular sieves have found wide application as catalysts, sorbents and ion-exchange materials. New zeolites with large pores are much in demand1–4, and have been sought for several decades4–7. All known zeolites, both natural and synthetic, contain pores comprised of 12 or fewer tetrahedrally coordinated silicon or aluminium atoms (T-atoms), but several microporous aluminophosphates with wider pores are now known2,8–12. The practical value of these large-pore phosphate-based materials is limited, however, by their poor thermal and hydrothermal stability. Here we report the synthesis of a high-silica zeolite with pores comprised of 14 T-atoms. Preliminary data indicate that this thermally stable large-pore material exhibits the kind of strong acidity that makes other zeolites useful catalysts.
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Freyhardt, C., Tsapatsis, M., Lobo, R. et al. A high-silica zeolite with a 14-tetrahedral-atom pore opening. Nature 381, 295–298 (1996). https://doi.org/10.1038/381295a0
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DOI: https://doi.org/10.1038/381295a0
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