Abstract
Optically clear monolithic (OCM) gels of mesoporous aluminosilicates (average pore diameter 3.6 nm) and alumina (6 nm) have been prepared by slow hydrolysis-polycondensation of alkoxides and converted into OCM mesoporous glasses by heating. In order to change the properties, different ways of modifying the pore size and structure are proposed. We show that addition of boron oxide reduces the average pore diameter. A higher effect can be obtained by addition of a surfactant. In this case the mesoporous matrix becomes microporous (d < 2 nm). Another way of modifying the pore structure consists of introducing nanoprecipitates inside the porosity by an impregnation process. Modifications of the porous structure are different in alumina and aluminosilicates.
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L. L. Hench, F.G. Araújo, J. K. West, and G. P. La Torre, J. Sol-Gel Sci. Technol. 2, 649 (1994).
T. Lombardi and L. C. Klein, Adv. Ceram. Mater. 3, 167 (1988).
G. V. Rama Rao, S. Venkadesan, and V. Saraswati, J. Non-Cryst. Solids 111, 103 (1989).
L. L. Hench, G. P. La Torre, S. Donovan, J. Marotta, and E. Valliere, Sol-Gel Optics II, edited by J. D. Mackenzie (SPIE, Bellingham, WA, 1992), p. 94.
S. Liu and L. L. Hench, Sol-Gel Optics II, edited by J. D. Mackenzie (SPIE, Bellingham, WA, 1992), p. 14.
P. J. Davis, C. J. Brinker, and D. M. Smith, J. Non-Cryst. Solids 142, 189 (1992).
P. J. Davis, C. J. Brinker, D. M. Smith, and R. A. Assink, J. Non-Cryst. Solids 142, 197 (1992).
R. Deshpande, D. W. Hua, D. M. Smith, C. J. Brinker, J. Non-Cryst. Solids 144, 32 (1992).
J. F. Quinson, J. Dumas, M. Chatelut, J. Serughetti, C. Guizard, A. Larbot, and L. Cot, J. Non-Cryst. Solids 113, 14 (1989).
S. Sato, T. Murakata, T. Suzuki, and T. Ohgawara, J. Mater. Sci. 25, 4880 (1990).
T. Murakata, S. Sato, T. Ohgawara, T. Watanabe, and T. Suzuki, J. Mater. Sci. 27, 1567 (1992).
L. L. Hench, G. Orcel, and J. L. Nogués, in Better Ceramics Through Chemistry II, edited by C. J. Brinker, D. E. Clark, and D. R. Ulrich (Mater. Res. Soc. Symp. Proc. 73, Pittsburgh, PA, 1986), p. 35.
L. L. Hench, in Science of Ceramic Chemical Processing, edited by L. L. Hench and D. R. Ulrich (Wiley, New York, 1986), p. 52.
V. Vendange and D. Sporn, unpublished.
V. Vendange and Ph. Colomban, Microporous Materials (in press, 1995).
V. Vendange and Ph. Colomban, unpublished.
G. Cao, H. W. Brinkman, J. Meijerink, K. J. de Vries, and A. J. Burggraaf, J. Am. Ceram. Soc. 76(9), 2201 (1993).
R. J.R. Uhlhorn, K. Keizer, and A. J. Burggraaf, J. Mem. Sci. 46, 225 (1989).
Ph. Colomban, A. Efremova, A. Regis, V. Vendange, A. Gruger, and J. C. Badot, Microporous Mater. 4, 65 (1995).
Ph. Colomban and L. Mazerolles, J. Mater. Sci. 26, 3503 (1991).
Ph. Colomban and V. Vendange, J. Non-Cryst. Solids 147&148, 245 (1992).
V. Vendange and Ph. Colomban, J. Sol-Gel Sci. Technol. 2, 407 (1994).
R. C. Weast, CRC Handbook of Chemistry and Physics 66th ed. (CRC Press, Inc., Boca Raton, FL, 1985), B-147.
R. L. Cohen, in Applications of Mössbauer Spectroscopy (Academic Press, New York, 1980), p. 113.
V. Vendange and Ph. Colomban, Mater. Sci. Eng. A168, 199 (1993).
S. Brunauer, P. H. Emmet, and E. Teller, J. Am. Chem. Soc. 60, 309 (1938).
E. P. Barret, L. G. Joyner, and P. H. Halenda, J. Am. Chem. Soc. 73, 373 (1951).
International Union of Pure and Applied Chemistry (IUPAC), Pure and Appl. Chem. 57 (4), 603 (1985).
S. J. Gregg and K. S. Sing, Adsorption Surface Area and Porosity (Academic Press, London, 1982), p. 94.
M. Yamane and S. Okano, Yogyo-kyokai Shi, 87, 434 (1979).
D. W. Schaefer and K. D. Keefer, Fractals in Physics, edited by Pietronero and Tosatti (North-Holland, Amsterdam, 1986), p. 39.
B. Himmel, Th. Gerber, and H. Bürger, J. Non-Cryst. Solids 91, 122 (1987).
J. Zarzycki, J. Non-Cryst. Solids 147&148, 176 (1992).
Ph. Colomban, J. Mater. Sci. 24, 3001 (1989); ibidem 3011.
E. R. Nightingale, Jr., J. Phys. Chem. 63, 1381 (1959).
J. F. Quinson, J. Dumas, M. Chatelut, J. Serughetti, C. Guizard, A. Larbot, and L. Cot, J. Non-Cryst. Solids 113, 14 (1989).
S. Sakka and T. Adachi, J. Mater. Sci. 25, 3408 (1990).
P. J. Davis, C. J. Brinker, D. M. Smith, and R. A. Assink, J. Non-Cryst. Solids 142, 197 (1992).
V. Vendange, Thesis, University Paris VI (1994).
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Vendange, V., Colomban, P. How to tailor the porous structure of alumina and aluminosilicate gels and glasses. Journal of Materials Research 11, 518–528 (1996). https://doi.org/10.1557/JMR.1996.0062
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DOI: https://doi.org/10.1557/JMR.1996.0062