6533b7d8fe1ef96bd126a285
RESEARCH PRODUCT
Dry synthesis of B-MFI, MTN- and MTW-type materials
U. DeforthKlaus K. UngerFerdi SchüthFerdi Schüthsubject
Reaction conditionsMaterials scienceChromatographyVapor pressureVapour pressure of waterGeneral EngineeringGeneral ChemistrySolution phaseAmorphous solidchemistry.chemical_compoundchemistryChemical engineeringGeneral Materials ScienceFluorideWater vaporSeed crystaldescription
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 SiO 2 · Al 2 O 3 gels at 700°C were transformed into MTN-type material in the presence of dried NH 4 F and TMACl. Amorphous precursors obtained by drying SiO 2 gels at 700°C were transformed into B-MFI in the presence of dried NH 4 F, B 2 O 3 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-05-01 | Microporous Materials |