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Periodic Mesoporous Silica Gels

Published online by Cambridge University Press:  10 February 2011

M. T. Anderson ,
J. E. Martin ,
J. G. Odinek ,
P. Newcomer  and
J. P. Wilcoxon
M. T. Anderson
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
J. E. Martin
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
J. G. Odinek
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
P. Newcomer
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
J. P. Wilcoxon
Affiliation:
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185
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Abstract

We have synthesized monolithic particulate gels of periodic mesoporous silica by adding tetramethoxysilane to a homogeneous alkaline micellar precursor solution. The gels exhibit 5 characteristic length scales over 4 orders of magnitude: fractal domains larger than the particle size (>500 nm), particles that are ˜150 to 500 nm in diameter, interparticle pores that are on the order of the particle size, a feature in the gas adsorption measurements that indicates pores ˜10–50 nm, and periodic hexagonal arrays of ˜3 nm channels within each particle. The wet gel monoliths exhibit calculated densities as low as ˜0.02 g/cc; the dried and calcined gels have bulk densities that range from ˜0.3–0.5 g/cc. The materials possess large interparticle (˜1.0–2.3 cc/g) and intraparticle (˜0.6 cc/g) porosities.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 95
Copyright
Copyright © Materials Research Society 1996

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References

1. Beck, J. S., Vartuli, J. C., Roth, W. J., Leonowicz, M. E., Kresge, C. T., Schmitt, K. D., Chu, C. T-W., Olson, K. H., Sheppard, E. W., McCullen, S. B., Higgins, J. B., and Schlenker, J. L., J. Am. Chem. Soc. 114, pp. 10834–10843 (1992).Google Scholar
2. Kresge, C. T., Leonowicz, M. E., Roth, W. J., Vartuli, J. C., and Beck, J. S., Nature 359, pp. 710–712 (1992).Google Scholar
3. Huo, Q., Margolese, D. I., Ciesla, U., Feng, P., Gier, T. E., Sieger, P., Leon, R., Petroff, P. M., Schuth, F., and Stucky, G. D., Nature 24, pp. 317–321 (1994).Google Scholar
4. Huo, Q., Margolese, D. I., Ciesla, U., Demuth, D. G., Feng, P., Gier, T. E., Sieger, P., Firouzi, A., Chmelka, B. F., Schuth, F., and Stucky, G. D., Chem. Mater. 6, pp. 1176–1191 (1994).Google Scholar
5. Chen, C.-Y., Li, H-X., and Davis, M. E. Micropor. Mater. 2, pp. 17–26(1993).Google Scholar
6. see for example, Martin, J. E., Wilcoxon, J. P., Schaefer, D., and Odinek, J., Phys. Rev. A, 41(8), pp. 4379–4391 (1990).Google Scholar
7. Lin, W., Chen, J., Sun, Y., and Pang, W., J. Chem. Soc., Chem. Commun. p. 2367 (1995).Google Scholar