Crystal morphology supports the liquid crystal formation mechanism for the mesoporous molecular sieve MCM-41

✍ Scribed by Chi-Feng Cheng; Heyong He; Wuzong Zhou; Jacek Klinowski

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 293 KB
• Volume: 244
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)00917-s

✦ Synopsis

Transmission electron microscopy of purely siliceous and gallosilicate mesoporous molecular sieves MCM-41 shows that the neighbouring crystal edges meet at the angle of 120 °, thus suggesting the most likely mechanism of crystal growth. The morphology of MCM-41 alone strongly supports the liquid crystal mechanism initiated by the silicate anions, and not the mechanism involving a layered intermediate.