Dry synthesis of B-MFI, MTN- and MTW-type materials

Deforth, U.; Unger, K.K.; Schüth, F.

doi:10.1016/S0927-6513(96)00118-6

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Dry synthesis of B-MFI, MTN- and MTW-type materials

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Schüth, F.
Institut für Anorganische Chemie, Johann Wolfgang Goethe-Universität. Marie-Curie-Str. 11, 60439 Frankfurt/Main, Germany;
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Deforth, U., Unger, K., & Schüth, F. (1997). Dry synthesis of B-MFI, MTN- and MTW-type materials. Microporous and Mesoporous Materials, 9(5-6), 287-290. doi:10.1016/S0927-6513(96)00118-6.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-3964-F

Abstract

B-MFI and MTN-type materials were synthesized via the fluoride route from dry powders in the complete absence of a solution phase. Amorphous precursors obtained by drying SiO₂ · Al₂O₃ gels at 700°C were transformed into MTN-type material in the presence of dried NH₄F and TMACl. Amorphous precursors obtained by drying SiO₂ gels at 700°C were transformed into B-MFI in the presence of dried NH₄F, B₂O₃ and TPABr. Water is formed as a reaction product. However, the water vapor pressure is appreciably below the water vapor saturation pressure under the given reaction conditions. In addition, syntheses using seed crystals were carried out successfully.