Zeolites: Reversible structure directing agents
- Publisher
- Elsevier Science
- Year
- 2004
- Weight
- 44 KB
- Volume
- 2004
- Category
- Article
- ISSN
- 1351-4180
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β¦ Synopsis
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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
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