Surface Structure and Chemistry of High Surface Area Silica Gels

Author

C. Jeffrey Brinker
Richard K. Brow, Missouri University of Science and TechnologyFollow
David R. Tallant
R. James Kirkpatrick

Abstract

Combined Raman and 29Si NMR investigations of high surface area silica gels indicate that dehydroxylation of the a-SiO2 surface results preferentially in the formation of cyclic trisiloxanes (3-membered rings). Estimates of the maximum experimentally observed concentration of 3-membered rings correspond to a surface coverage of about 28-58%. Two consequences of 3-membered rings on the a-SiO2 surface are enhanced hydrolysis rates and increased skeletal densities. © 1990.

Recommended Citation

C. J. Brinker et al., "Surface Structure and Chemistry of High Surface Area Silica Gels," Journal of Non-Crystalline Solids, Elsevier, Jan 1990.

The definitive version is available at https://doi.org/10.1016/0022-3093(90)90187-Q

Department(s)

Materials Science and Engineering

International Standard Serial Number (ISSN)

0022-3093; 1873-4812

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1990 Elsevier, All rights reserved.

Publication Date

01 Jan 1990