Surface Structure and Chemistry of High Surface Area Silica Gels
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.
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 http://dx.doi.org/10.1016/0022-3093(90)90187-Q
Materials Science and Engineering
Article - Journal
© 1990 Elsevier, All rights reserved.