RELATIONS BETWEEN THE TEXTURE OF SILICA AEROGELS AND THEIR PREPARATION

被引：27

作者：

EHRBURGERDOLLE, F ^{[1
]}

DALLAMANO, J ^{[1
]}

ELALOUI, E ^{[1
]}

PAJONK, GM ^{[1
]}

机构：

[1] UNIV LYON 1,LACE,F-69622 VILLEURBANNE,FRANCE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1995年 / 186卷

关键词：

D O I：

10.1016/0022-3093(95)00036-4

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：

The effect of the preparation conditions on the morphology (Brunauer, Emmett and Teller surface area, micro-, meso-and macroporosity, fractal dimension) of silica aerogels is presented. Solutions of tetramethyloxysilane (TMOS) in methanol were used for the sol-gel reactions. The parameters were volume fraction of TMOS, pH of the medium and hypercritical drying method (methanol or CO2). Adsorption of different gases was used for the characterization of the size and arrangement of primary particles at the molecular scale and thermoporometry gave information on the arrangement of primary particles into aggregates.

引用

页码：9 / 17

页数：9

共 25 条

[1]

Pajonk G.M., Appl. Catal., 72, (1991)

[2]

Schaefer D.W., Rev. Phys. Appl., Colloq. C4, 24, (1989)

[3]

Woignier T., Phalippou J., Quinson J.F., Pauthe M., Laveissiere F., J. Non-Cryst. Solids, 145, (1992)

[4]

Tewari P.H., Hunt A.J., Lofftus K.D., Mater. Lett., 3, (1985)

[5]

Vacher R., Woignier T., Phalippou J., Pelous J., Courtens E., Phys. Rev., 37 B, (1988)

[6]

Emmerling A., Fricke J., J. Non-Cryst. Solids, 145, (1992)

[7]

Ehrburger-Dolle F., Holz M., Mauzac C., Lahaye J., Pajonk G.M., J. Non-Cryst. Solids, 145, (1992)

[8]

Ehrburger-Dolle F., Dallamano J., Pajonk G.M., Elaloui E., Characterization of Porous Solids III, Studies in Surface Science and Catalysis, 87, (1994)

[9]

Phalippou J., Ayral A., Woignier T., Quinson J.F., Pauthe M., Chatelut M., Fractal Geometry of Silica Alcogels from Thermoporometry Experiments, Europhysics Letters (EPL), 14, (1991)

[10]

Gregg S.J., Sing K.S.W., Adsorption, Surface Area and Porosity, (1982)

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