Abstract: Porous silica was prepared using the sol-gel synthesis with porous carbon matrices as a pore-forming support. Tetraethoxysilane (TEOS) was hydrolyzed in an acid medium in the presence of a substoichiometric amount of water. Various carbon materials were used, among them Sibunit and catalytic filamentous carbon. Carbon matrices were impregnated with hydrolyzed TEOS and dried, then carbon was removed by burning out in air at 873 K. The obtained porous silica samples were studied by adsorption and electron microscopic methods. The specific surface area as high as 1267 m2g and pore volume as high as 5.7 cm3/g were determined for some silica samples. Thus deposited SiO2 was found to cover the carbon surface copying its surface. With CFC used as carbon matrix, silica nanotubes were obtained. Thermostability of such silica is significantly greater as compared to silica gels reported earlier.

Cite: Ermakova M.A. , Ermakov D.Y. , Kuvshinov G.G. , Fenelonov V.B. , Salanov A.N.
Synthesis of High Surface Area Silica Gels Using Porous Carbon Matrices
Journal of Porous Materials. 2000. V.7. N4. P.435-441. DOI: 10.1023/A:1009610424103 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Oct 29, 1998
Accepted:	Jun 24, 1999
Published print:	Jun 1, 2000

Identifiers:

Web of science:	WOS:000085087900002
Scopus:	2-s2.0-0034209839
Elibrary:	13359811
Chemical Abstracts:	2000:225983
Chemical Abstracts (print):	133:6498
OpenAlex:	W201384201

Citing:

DB	Citing
Web of science	6
Scopus	7
Elibrary	9
OpenAlex	5

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