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Stable Tetrahedral Aluminum Sites in Hexagonal Mesoporous Aluminosilicates
Author(s) -
Han Yu,
Yu Yi,
Xu XianZhu,
Xiao FengShou,
Liu XianChun,
Han XiuWen,
Bao XinHe
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020200802
Subject(s) - aluminosilicate , nanoclusters , chemistry , molecular sieve , mesoporous material , aluminium , bromide , hexagonal crystal system , tetrahedron , zeolite , crystallography , chemical engineering , inorganic chemistry , adsorption , organic chemistry , catalysis , engineering
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.