Microporous Alumino-Silicate Gels Synthesized by Sol-Gel Method

Abstract

Microporous alumino-silicate gels were prepared by the sol-gel method. The Al cations were incorporated into these systems by mixing an aluminum nitrate solution into silica water based sols under controlled pH conditions. The micro structure as well as the form of the products are influenced by the amount of Al additives. Al cations have significant effects on the properties of silica sols and gels. The alumino-silicate gel has micro porosity with surface area as high as 300 m2/g even after calcining at 900 °C for one hour. Strong negative charge is found on these alumino-silicate surfaces in aqueous solution indicating the Al cations have been substituted isomorphically into the Si sites in the framework of silica.

This is a preview of subscription content, access via your institution.

Literature Cited

  1. 1.

    M. W. Ackley, R. F. Giese and R. T. Ralph, Zeolites, 12, (7), 780–788 (1992).

    CAS  Article  Google Scholar 

  2. 2.

    C. O. Bennett and S. L. Suib, Catalysis Taday, 15, 3–4, 503–514 (1992).

    CAS  Article  Google Scholar 

  3. 3.

    T. Lopez, M. Asomasa and R. Gomez, J. Non- cry st. Solids, 147 & 148, 769–772 (1992).

    Article  Google Scholar 

  4. 4.

    G. Sheng, L. Chu, W. A. Zeltner and M. A. Anderson, J. Non- cryst. Solids, 147 & 148, 548–553 (1992).

    Article  Google Scholar 

  5. 5.

    C.J. Brinker and G. B. Sherer, Sol-Gel Science: The Physics And Chemistry Of Sol-Gel Processing. (Academic Press, Boston, 1990).

    Google Scholar 

  6. 6.

    E. M. Rabinovich, A. J. Bruce, N. A. Kopylov and P. L. Trevor, J. Non- cryst. Solids, 160, (1–2), 126–143 (1992).

    Google Scholar 

  7. 7.

    D. M. Ginter, A. T. Bell and C. J. Radke, Zeolites, 12, (6), 742–749 (1992).

    CAS  Article  Google Scholar 

  8. 8.

    P. W. J. G. Wijnen, T. P. M. Beelen, K. P. J. Rummens and R. A. van Santen, J. Non-cryst. Solids, 152, 127–136 (1993).

    CAS  Article  Google Scholar 

  9. 9.

    R. Salmon and E. Matijevic, Ceramics International, 16 (3), 157–163 (1990).

    CAS  Article  Google Scholar 

  10. 10.

    P.K. Iler. The Chemistry Of Silica. (Wiley Interscience, New York, 1979).

    Google Scholar 

  11. 11.

    S. R. Morrison, The Chemical Physics of Surface. (Plenum Press, New york, 1977)

    Google Scholar 

  12. 12.

    N. Cardona-Martinez and J. A. Dumesic, J. Catal., 127, 707 (1991).

    Google Scholar 

  13. 13.

    W. C. Cheng and K. Rajagopalan, in Fluid Catalytic Cracking II. Concepts in Catalyst Design. M. L. Occelli Ed., 198 (ACS Symposium series 452, ACS, Washington D.C., 1991).

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to L. Chu.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Chu, L., Yaluris, G., Zeltner, W.A. et al. Microporous Alumino-Silicate Gels Synthesized by Sol-Gel Method. MRS Online Proceedings Library 346, 481–486 (1994). https://doi.org/10.1557/PROC-346-481

Download citation