Synthesis and characterization of defect-free crystals of MFI-type zeolites

✍ Scribed by Sean A. Axon; Jacek Klinowski

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 481 KB
• Volume: 81
• Category: Article
• ISSN: 0926-860X
• DOI: 10.1016/0926-860x(92)80258-e

✦ Synopsis

Si magic-angle-spinning nuclear magnetic resonance spectra (with and without cross-polarization) and nitrogen adsorption isotherms demonstrate that the crystals of MPI seolites synthesized using the "fluoride method" are free from structural defects. By contrast, defects are present in cxy5tala prepared using conventional synthetic methods even after a lengthy hydrothermal treatment.