Aging Behavior of Metal Oxide Aerogels

Dong Jin Suh; Tae-Jin Park; Jong Ho Sonn; Hyoung-Yong Han; Jong-Choo Lim

Korean Journal of Chemical Engineering, Vol.17, No.1, 101-104, January, 2000

DOI10.1007/BF02789261 Export Citation

Aging Behavior of Metal Oxide Aerogels

Dong Jin Suh^†, Tae-Jin Park , Jong Ho Sonn¹, Hyoung-Yong Han¹, and Jong-Choo Lim¹

Clean Technology Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 136-791, Korea
¹Department of Chemical Engineering, Dongguk University, 3-26 Phil-dong, Joong-ku, Seoul 100-715, Korea

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Aerogels of titania, zirconia, niobia and silica were prepared by CO₂ supercritical drying of the corresponding alcogels. Their porous texture could be modified by further aging of the alcogels. This kind of textural modification was found to be different according to the nature of the metal precursor and sol-gel conditions.

Keywords:Aerogel;Sol-gel;Supercritical Drying;Aging;Pore Structural Properties

[References]

Brinker CJ, Scherer GW, "Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing," Academic Press, New York (1990)
Hench LL, West JK, Chem. Rev., 90, 33 (1990)
Iler RK, "The Chemistry of Silica," Wiley, New York (1979)
Mrowiec-Bialon J, Pajak L, Jarzebski AB, Lachowski AI, Malinowski JJ, Langmuir, 13(23), 6310 (1997)
Pope EJA, Mackenzie JD, J. Non-Cryst. Solids, 87, 185 (1986)
Russo RE, Hunt AJ, J. Non-Cryst. Solids, 86, 219 (1986)
Smith DM, Davis PJ, Brinker CJ, Mater. Res. Soc. Symp. Proc., 180, 235 (1990)
Suh DJ, Park TJ, Chem. Mater., 8, 509 (1996)
Vega AJ, Scherer GW, J. Non-Cryst. Solids, 111, 153 (1989)

[Referenced By]

[Related Articles]

[1] Brinker CJ, Scherer GW, "Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing," Academic Press, New York (1990)

[2] Hench LL, West JK, Chem. Rev., 90, 33 (1990)

[3] Iler RK, "The Chemistry of Silica," Wiley, New York (1979)

[4] Mrowiec-Bialon J, Pajak L, Jarzebski AB, Lachowski AI, Malinowski JJ, Langmuir, 13(23), 6310 (1997)

[5] Pope EJA, Mackenzie JD, J. Non-Cryst. Solids, 87, 185 (1986)

[6] Russo RE, Hunt AJ, J. Non-Cryst. Solids, 86, 219 (1986)

[7] Smith DM, Davis PJ, Brinker CJ, Mater. Res. Soc. Symp. Proc., 180, 235 (1990)

[8] Suh DJ, Park TJ, Chem. Mater., 8, 509 (1996)

[9] Vega AJ, Scherer GW, J. Non-Cryst. Solids, 111, 153 (1989)