Stable Tetrahedral Aluminum Sites in Hexagonal Mesoporous Aluminosilicates

✍ Scribed by Yu Han; Yi Yu; Xian-Zhu Xu; Feng-Shou Xiao; Xian-Chun Liu; Xiu-Wen Han; Xin-He Bao

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 319 KB
• Volume: 20
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.20020200802

✦ Synopsis

Abstract

A unique templating approach for the synthesis of hexagonal mesoporous aluminosilicates via self‐assembly of pre‐formed aluminosilicate nanoclusters with the templating micella formed by cetyltrimethylammonium bromide (CTAB) is described. The obtained materials of MAS‐5 are hydrothermally stable, which is shown by X‐ray diffraction (XRD) analysis. Furthermore, as characterized by NMR technique, MAS‐5 has stable tetrahedral aluminum sites that is the major contributions to the acidity of aluminosilicate molecular sieve, and on non‐framework aluminium species in the samples was observed.