Synthesis of alumina gels in amphiphilic media

被引:13
作者
Acosta, S
Ayral, A
Guizard, C
Cot, L
机构
[1] Cent Natl de la Recherche, Scientifique UMR, Montpellier, France
关键词
alumina gel; surfactant; mesophase; template; porous texture;
D O I
10.1023/A:1026429405782
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This work deals with the synthesis of alumina gels from aqueous solutions of aluminum chloride in the presence of cationic surfactant molecules. The effect on the sol-gel transition of the reagent concentrations and of the synthesis temperature are first studied. The structure of the resulting wet and dried gels and the formation of liquid crystal mesophases are studied by X-ray diffraction. The thermal and structural evolutions of the gels are then characterized by thermogravimetric and X-ray diffraction measurements. Finally, nitrogen adsorption isotherms are used to investigate the porous texture of the thermally treated materials up to the transformation into alpha-Al2O3.
引用
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页码:195 / 199
页数:5
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