Silicate and aluminosilicate MFI-type zeolites are synthesized with di-and triquaternary ammonium cations as structure-directing agents (SDA). Solid-state NMR spectra show that polycations are intact in the as-synthesized zeolites. Materials synthesized with polycationic molecules are compared to ze
Zeolite synthesis in the presence of azonia-spiro compounds as structure-directing agents
โ Scribed by Roberto Millini; Luciano Carluccio; Francesco Frigerio; Wallace O'Neil Parker Jr.; Giuseppe Bellussi
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 284 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1387-1811
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Tetrapropylammonium, ethanoltripropylammonium and diethanoldipropylammonium cations were used as structure-directing agents for the synthesis of pure-silica, MFI-type zeolites. These molecules are employed to investigate the influence of the organic hydrophobicity/hydrophilicity on zeolite formation