Synthesis of Ordered Mesoporous Aluminosilicate under a Low Surfactant/Silica Molar Ratio Condition

Abstract

Abstract: Ordered mesoporous aluminosilicate materials with atomic Si/Al ratios of 16--64 were synthesized at a
very low molar ratio of surfactant/silica (0.12) by using aluminium chloride hexahydrate and TEOS as the sources of aluminium and silicon. The resulting
materials were characterized by XRD, TEM, FTIR and nitrogen sorption. As the NaOH/Si molar ratio increases from 0.2 to 0.6, the products obtained change
from hexagonal MCM-41 to cubic MCM-48. The quality of the product rapidly deteriorates as the aluminium content of the solid increases beyond a certain
limit. XRD shows that the substitution of the silicon by the large aluminium atoms leads to the expansion of the unit cell.

Key words: mesoporous, aluminosilicate, charaterization

CLC Number:

TM285

YU Jian,WANG Lian-Zhou,SHI Jian-Lin,Ruan Met-Ling,YAN Dong-Sheng. Synthesis of Ordered Mesoporous Aluminosilicate under a Low Surfactant/Silica Molar Ratio Condition[J]. Journal of Inorganic Materials.

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Synthesis of Ordered Mesoporous Aluminosilicate under a Low Surfactant/Silica Molar Ratio Condition

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