Synthesis of hydrothermally stable, hierarchically mesoporous aluminosilicate Al-SBA-1 and their catalytic properties

Hydrothermally stable mesoporous aluminosilicates Al-SBA-1 with hierarchical pore structure have been successfully synthesized under alkaline condition at 120 C by employing organic mesomorphous complexes of polyelectrolyte (poly(acrylic acid) (PAA)) and cationic surfactant (hexadecyl pyridinium chl...

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Bibliographic Details
Published in:Nanoscale 2012-03, Vol.4 (6), p.215-2156
Main Authors: Li, Na, Wang, Jin-Gui, Xu, Jian-Xiong, Liu, Jin-Yu, Zhou, Hui-Jing, Sun, Ping-Chuan, Chen, Tie-Hong
Format: Article
Language:English
Subjects:
Aluminum Silicates - chemistry
Catalysis
Crystallization - methods
Hot Temperature
Macromolecular Substances - chemistry
Materials Testing
Molecular Conformation
Nanostructures - chemistry
Nanostructures - ultrastructure
Particle Size
Porosity
Surface Properties
Water - chemistry
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Summary:Hydrothermally stable mesoporous aluminosilicates Al-SBA-1 with hierarchical pore structure have been successfully synthesized under alkaline condition at 120 C by employing organic mesomorphous complexes of polyelectrolyte (poly(acrylic acid) (PAA)) and cationic surfactant (hexadecyl pyridinium chloride (CPC)) as template. The Si/Al ratio could be as high as 5 and the incorporation of Al into the silica framework did not disturb the well-ordered cubic Pm 3&cmb.macr; n mesostructure. Meanwhile, the incorporation of Al could greatly increase the specific surface area and pore volume of the samples. The Al-SBA-1 materials exhibited a high hydrothermal stability and remained stable even after being treated in boiling water for 10 days. The catalytic activity of the Al-SBA-1 materials was investigated by employing the FriedelCrafts alkylation of toluene with benzyl alcohol as a model reaction and they exhibited excellent catalytic property due to the incorporated acid sites and the hierarchically mesoporous structure. Hydrothermally stable mesoporous aluminosilicates Al-SBA-1 with hierarchical pore structure have been successfully synthesized under alkaline condition at 120 C.
ISSN:2040-3364
2040-3372
DOI:10.1039/c2nr11643j